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Low-grade appendiceal mucinous neoplasms (LAMN) constitute a rare subset of epithelial tumors and represent the second most common form of appendiceal cancer. LAMN typically presents as acute appendicitis, with definitive diagnosis often occurring incidentally during appendectomy surgery. While contrast-enhanced computed tomography (CECT) is the imaging of choice, misdiagnoses are common, highlighting the need for additional diagnostic modalities that are often underutilized. There is ongoing debate about treatment recommendations which typically involve a simple appendectomy, but controversy persists regarding the intraoperative necessity of a cecectomy, ileocecectomy, or formal right hemicolectomy. Here, we present a case featuring a 72-year-old African American female referred to our surgery clinic presenting solely with bloating and constipation rather than classical acute appendicitis, discrepancies between CT and MR imaging, and an unusual intraoperative finding of a posteriorly positioned mucocele adhered to the cecum, necessitating right hemicolectomy.
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Appendicitis is predominantly observed in teens and young adults. While typical causes include fecalith-induced luminal obstructions, in older adults less common etiologies such as tumors should be considered. This report highlights a rare case of appendicitis secondary to cecal adenocarcinoma in a high-risk patient with a history of obesity and type 2 diabetes mellitus. This case underscores the necessity of considering malignancy as a differential diagnosis in older adults presenting with appendicitis-like symptoms.
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Purpose: Laparoscopic right hemicolectomy is the standard surgical approach for treatment of right-sided colonic neoplasms. Although performed within a strict Enhanced Recovery After Surgery (ERAS) program, patients still develop postoperative ileus. The aim of this study was to describe the factors responsible for postoperative ileus after right hemicolectomy in a patient population with over 80% ERAS adherence. Methods: In this retrospective study, we analyzed 499 consecutive patients undergoing elective right-sided colectomy for neoplastic disease in a single high-volume center. All patients followed an updated ERAS program. Results: The overall median ERAS adherence was 80%. Patients with ≥ 80% adherence (n = 271) were included in further analysis. Their median ERAS adherence was 88.9% (interquartile range, 80-90; range, 80-100). Twenty-four of 271 patients (8.9%) developed postoperative ileus. A univariate regression analysis revealed carcinoma situated in the transverse colon, duration of operation over 200 minutes, and opiate consumption over 10 mg on the second postoperative day (POD) to be associated with a significantly higher risk of postoperative ileus. Multivariate regression analysis revealed that duration of surgery over 200 minutes (odds ratio [OR], 2.4; 95% confidence interval [CI], 1.0-5.8; P = 0.045) and opiate consumption over 10 mg on POD 2 (OR, 4.8; 95% CI, 1.6-14.3; P = 0.005) independently predict a higher risk for postoperative ileus. The median length of hospital stay was significantly longer in patients with postoperative ileus (8 days vs. 3 days, P < 0.001). None of the 271 patients died during a 30-day follow-up. Conclusion: Long duration of surgery, even minor postoperative opiate use, predict a higher risk for postoperative ileus in strictly ERAS-adherent patients undergoing laparoscopic right hemicolectomy.
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BACKGROUND: This study aimed to investigate factors associated with prolonged operative time in laparoscopic right hemicolectomy for colon cancer. METHODS: This was a retrospective review of patients with colon cancer who underwent laparoscopic right hemicolectomy between 2011 and 2021. Linear and binary logistic regression analyses were performed to determine factors associated with prolonged operative time. The association between longer operative times and complications and hospital stay was assessed. RESULTS: One hundred and ninety-seven patients (52.3% female; mean age: 68.8 ± 14.1 years) were included. Factors independently associated with operative time were male sex (ß = 17.3, 95% CI: 2, 32.5; p = 0.026) and extended hemicolectomy (ß = 67.7, 95% CI: 27.6, 107.9; p = 0.001). American Society of Anesthesiologists (ASA) IV classification had a borderline significant association with operative time (ß = 100.4, 95% CI: -2.05, 202.9; p = 0.055). Male sex (r = 0.158; p = 0.026), body mass index (r = 0.205; p = 0.004), ASA classification (r = 0.232; p = 0.001), extended hemicolectomy (r = 0.256; p < 0.001), and intracorporeal vessel control (r = 0.161; p = 0.025) had significant positive correlation with operative times. Patients with operative times ≥ 160 min had significantly longer hospital stays (5 vs. 4 days; p = 0.043) and similar complication rates to patients with shorter operative times. CONCLUSIONS: Male sex, advanced ASA classification, and extended hemicolectomy were independently and significantly associated with longer operative times in laparoscopic right hemicolectomy. Longer operative times were associated with longer hospital stays and similar complication rates.
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BACKGROUND: Colorectal cancer is a leading cause of cancer-related deaths worldwide, with approximately 1.9 million new cases and over 935,000 deaths in 2020. Right-sided colon cancer, a subset of colorectal cancer, represents a significant health burden. Laparoscopic colon surgery has significantly improved postoperative recovery. The superiority of one approach or landmark over another is still argued about due to the lack of large-scale prospective studies. However, deep understanding both of the anatomical variation and characteristics of each approach is of extreme importance to minimizing adverse effects and maximizing patient benefit after laparoscopic right hemicolectomy. Among these, the cranial-to-caudal approach offers advantages such as reduced intraoperative blood loss, shorter operation time, and decreased risk of vascular injury. The purpose of this study is to compare the efficacy and safety of two cranial-to-caudal approaches for laparoscopic right hemicolectomy (LRH). Specifically, the study aims to evaluate the differences between the conventional cranial-to-caudal approach with medial ligation of the middle colic vein (MCV), and the cranial-to-caudal approach with cranial MCV ligation and surgical trunk sheath opening (CC-plus). The goal is to determine which method offers superior outcomes in terms of intraoperative blood loss, operation time, and overall patient recovery. MATERIALS AND METHODS: This single-center retrospective study compared two cranial-to-caudal approaches for LRH. The study included 51 patients who underwent LRH between January 2021 and November 2023 at the Second Affiliated Hospital, Zhejiang University School of Medicine. Patients were divided into two groups: Group A (26 patients) used the cranial-to-caudal approach with medial ligation of the middle colic vein (MCV), and Group B (25 patients) used the cranial-to-caudal approach with cranial MCV ligation and surgical trunk sheath opening (CC-plus). General characteristics, intraoperative parameters, and postoperative outcomes were compared. Statistical analysis was performed using SPSS version 20.0, with significance set at p < 0.05. RESULTS: There were no significant differences between the groups regarding age, gender, tumor location, or clinical staging. All patients achieved R0 resection with no perioperative deaths. The CC-plus group had significantly reduced intraoperative blood loss and shorter operation time compared to the CC group (p < 0.05). No significant differences were found in first postoperative exhausting time, first postoperative defecation time, and postoperative hospital stay between the two groups. Furthermore, no significant differences were evaluated in postoperative complications (surgical site infection (SSI), ileus or bowel obstruction, refractory diarrhea, anastomotic leakage, deep vein thrombosis (DVT), hemorrhage) between the two groups on a median follow up of 12.6 months. Pathological examination showed no significant differences in total lymph nodes dissected and tumor stage. CONCLUSIONS: The cranial-to-caudal approach with MCV ligation via the cranial approach (CC-plus) is a safe and effective method for LRH, offering advantages in terms of reduced operation time and intraoperative blood loss. This study's findings suggest that the CC-plus approach may be superior to the conventional cranial-to-caudal approach.
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INTRODUCTION: Goblet cell carcinoid (GCC) is a rare and poorly understood appendiceal neoplasm, exhibiting mixed histological and aggressive clinical features. Current guidelines recommend right hemicolectomy in all cases, although there is conflicting evidence that appendicectomy alone may be sufficient. This review aims to identify the optimal surgical management for appendiceal GCC. METHODS: A systematic review was performed by searching MEDLINE, Embase, Scopus and the Cochrane Register of Controlled Trials. Randomised controlled trials, cohort studies or large case series (>5 patients) reporting clinical outcomes for patients undergoing surgical management of GCC of the appendix were included. Outcomes extracted included participant and tumour characteristics, type of surgery and survival data. RESULTS: A total of 1341 studies were retrieved. After duplicate removal, 796 titles were screened for relevance prior to abstract and full text review. A total of six studies were included for analysis, comprising 3177 patients-1629 females and 1548 males. The median age ranged from 51 to 72 years. A total of 2329 patients underwent right hemicolectomy, while 824 were treated with appendicectomy only. Overall, the included studies report increased survival in patients undergoing right hemicolectomy compared to appendicectomy alone. A meta-analysis was not possible due to insufficient data reported in the published literature to date. CONCLUSIONS: There is no consensus regarding the optimal surgical management of appendiceal GCC, as outcomes-based data comparing surgical interventions are lacking. It is possible that some patients with favourable features are overtreated. The absence of robust evidence to support a more conservative approach means that right hemicolectomy remains the standard of care for all patients, in keeping with current international guidelines. The rarity of this condition and limited data in the published studies remain barriers to evidence-based best clinical practice.
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The evolution of laparoscopic right hemicolectomy, particularly with complete mesocolic excision (CME) and central vascular ligation (CVL), represents a significant advancement in colon cancer surgery. The CoDIG 1 and CoDIG 2 studies highlighted Italy's progressive approach, providing useful findings for optimizing patient outcomes and procedural efficiency. Within this context, accurately predicting postoperative length of stay (LoS) is crucial for improving resource allocation and patient care, yet its determination through machine learning techniques (MLTs) remains underexplored. This study aimed to harness MLTs to forecast the LoS for patients undergoing right hemicolectomy for colon cancer, using data from the CoDIG 1 (1224 patients) and CoDIG 2 (788 patients) studies. Multiple MLT algorithms, including random forest (RF) and support vector machine (SVM), were trained to predict LoS, with CoDIG 1 data used for internal validation and CoDIG 2 data for external validation. The RF algorithm showed a strong internal validation performance, achieving the best performances and a 0.92 ROC in predicting long-term stays (more than 5 days). External validation using the SVM model demonstrated 75% ROC values. Factors such as fast-track protocols, anastomosis, and drainage emerged as key predictors of LoS. Integrating MLTs into predicting postoperative LOS in colon cancer surgery offers a promising avenue for personalized patient care and improved surgical management. Using intraoperative features in the algorithm enables the profiling of a patient's stay based on the planned intervention. This issue is important for tailoring postoperative care to individual patients and for hospitals to effectively plan and manage long-term stays for more critical procedures.
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Background Bacteria and parasites cause liver abscesses (LAs), with the unusual but fatal consequence of ruptured LA. Along with the clinical signs of icterus, right upper quadrant pain, and a history of loose stools, patients present with non-specific symptoms such as fever, nausea, and generalized weakness. Consistent findings include male sex prevalence and frequent alcohol consumption. Leukocytosis, abnormal liver function, and an increased international normalized ratio have been identified by biochemical analysis; however, these findings are not specific to a ruptured LA diagnosis, and imaging is necessary to reach a definitive diagnosis. Ultrasonography usually confirms the diagnosis, and computed tomography is required in certain situations. In confined ruptures, percutaneous drainage combined with antibiotic therapy is typically the initial treatment course. Generally reserved for non-responders or moribund patients with delayed presentation, an open surgical approach may involve simple draining of a ruptured abscess or ileocecal resection, or right hemicolectomy in cases of large bowel perforations, both of which increase patient morbidity. A definite guide to management is still missing in the literature. In this article, we have discussed and correlated with data the predictors of surgery and preoperative predictors of perforation. Materials and methods This retrospective study was performed at Safdarjung Hospital, New Delhi, between January 2022 and December 2023. The study included 115 patients diagnosed with ruptured LA by ultrasound. Medical records were analyzed, and various parameters of the illness, clinical features, hematological and biochemical profiles, ultrasound features, and therapeutic measures were noted and assessed. Results Of the 115 patients, 88% (n = 101) were male. The most common symptoms were abdominal pain (114 patients) and right upper abdominal tenderness (107 patients). Fifty-two patients were treated with percutaneous drainage, and 42 underwent laparotomy. Intercostal drainage (ICD) tubes were placed in 19 patients. Sixteen patients had large bowel perforations. Twenty-three patients died (20%), including 17 patients who underwent laparotomy and nine patients who had large bowel perforation (39.1% associated with overall mortality, 52.9% associated with mortality in laparotomy). One patient with percutaneous drainage and a right ICD tube died in the intensive care unit. Four patients died before intervention. Significant associations were noted between perforation and mortality in patients who underwent surgical drainage. Loose motions, alcohol and smoking consumption, and deranged creatinine and albumin levels were found to have a significant association with surgical drainage. Conclusion The study found that a ruptured liver abscess (LA) may require surgery to drain the collection or repair the pathological bowel, which increases the morbidity, but it is a lifesaving procedure over percutaneous catheter drainage. The study also identified factors associated with a higher risk of death, such as a history of loose stools and low blood albumin levels.
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Primary squamous cell carcinoma of the colon and rectum is a rare malignancy. Most of the anatomical sites that are reported to be affected include the esophagus and anal canal. This report highlights the case of a 54-year-old male with a known history of Lynch syndrome and a previous diagnosis of colon cancer who was found to have a recurrence of malignancy affecting this unlikely area. The treatment strategies for this colorectal squamous cell carcinoma have not been thoroughly explored, so this report aims to highlight effective interventions, including surgical resection and neoadjuvant chemotherapy and radiation. There is a poor prognosis associated with this condition, as it does not typically present until the late stages; however, in this particular instance, early detection leads to improved outcomes.
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Vaginal natural orifice transluminal endoscopic surgery (vNOTES) for colorectal cancer utilizes transvaginal access for bowel mobilization, vascular pedicle ligation, oncological resection, and bowel anastomosis, along with subsequent transvaginal natural orifice specimen extraction (NOSE), reducing or eliminating the need for transabdominal access. In this report, we describe the technique of vNOTES right hemicolectomy for cecal cancer, with intracorporeal anastomosis and transvaginal NOSE, including a step-by-step operative video. The patient was a 59-year-old Chinese female (body mass index 32.0 kg/m2) with a cT3N0M0 3 cm cecal adenocarcinoma. Posterior colpotomy was created with insertion of a dual-ring wound protector. vNOTES D2 right hemicolectomy with a fully stapled intracorporeal anastomosis was performed via a homemade transvaginal glove port, using extra-long rigid instruments. A 10 mm, 30° rigid laparoscope was used for operative visualization through a transumbilical port, without additional percutaneous trocars. Operative difficulties pertained to suboptimal instrument reach, lack of triangulation, and frequent clashing within the restricted access space. Surgical duration was 300 min, with 50 ml of blood loss. There was minimal postoperative pain. Return of bowel function occurred on postoperative day 2, with discharge from hospital on postoperative day 3. The patient resumed normal daily activities and regular diet by 1-week post-surgery. Self-reported cosmetic satisfaction score was excellent. No operative complications were observed at 2 months' follow-up. vNOTES right hemicolectomy with intracorporeal anastomosis is safe and feasible in highly selected colon cancer patients. Operators should be proficient in conventional laparoscopic colectomy and transvaginal NOSE. More experience with the vNOTES technique is required to ascertain best practices.
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Adenocarcinoma , Anastomosis Quirúrgica , Neoplasias del Ciego , Colectomía , Cirugía Endoscópica por Orificios Naturales , Vagina , Humanos , Femenino , Colectomía/métodos , Persona de Mediana Edad , Cirugía Endoscópica por Orificios Naturales/métodos , Anastomosis Quirúrgica/métodos , Vagina/cirugía , Neoplasias del Ciego/cirugía , Adenocarcinoma/cirugía , Tempo OperativoRESUMEN
Background Surgical site infection in colon surgery is associated with significant cost and increased length of hospital stay. Recently, there has been interest in the use of pulsed lavage to reduce the risk of surgical site infection in contaminated wounds. Although increasingly used and gaining popularity, its effectiveness in elective colorectal surgery has been poorly documented. This study aimed to investigate the incidence of surgical site infection within 30 days of elective colorectal surgery in patients who underwent wound irrigation with pulse lavage versus standard closure. Methodology A retrospective study was conducted at a university hospital over a two-year period between January 2020 and December 2021. All adult patients who underwent elective colorectal surgery were eligible for inclusion. Results A total of 222 patients underwent elective colorectal surgery during the study period. Operative procedures included abdominoperineal resections, left and right hemicolectomies, pelvic exenterations, small bowel or large bowel resections, as well as stoma reversals, formations, and refashioning. In total, 76 patients underwent pulse lavage while 146 did not. The total number of surgical site infections was 39 during the study period. Infection rates in the pulse lavage group were 14.47% compared to 19.18% in the standard closure group. The chi-square analysis concluded the difference in infection rates was not statistically significant (p = 0.213). Conclusions The findings demonstrated a difference in infection rates of almost 5% favouring the pulse lavage group; however, it did not reach a statistical difference. Although infection rates were in keeping with those described in the literature, further studies in the form of randomized controlled trials should be performed to determine the benefits, if any, of pulse lavage in colorectal surgery.
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Complete mesocolic excision (CME) with D3 lymphadenectomy for colon cancer has been shown to improve overall as well as disease-free survival compared to conventional right hemicolectomy. Performing a laparoscopic CME/D3 right hemicolectomy with intracorporeal anastomosis (ICA) can be technically demanding even for experienced operators. Here, we present a systematic, standardized approach to the surgery.
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Anastomosis Quirúrgica , Colectomía , Neoplasias del Colon , Laparoscopía , Escisión del Ganglio Linfático , Humanos , Colectomía/métodos , Anastomosis Quirúrgica/métodos , Laparoscopía/métodos , Neoplasias del Colon/cirugía , Escisión del Ganglio Linfático/métodos , Mesocolon/cirugíaRESUMEN
INTRODUCTION & OBJECTIVES: Treatment of PMP consists of appendectomy, cytoreductive surgery (CRS) and HIPEC. Right-sided hemicolectomy is necessary only when PMP is high grade, given the lymphatic invasion risk. To date, no single preoperative factor was identified as predictive of PMP grade. MATERIALS & METHODS: Preoperative factors of a prospective cohort study on PMP were retrospectively analyzed, in order to identify situations linked with high or low grade appendiceal PMP. The main outcome was PMP grade on definitive histology after CRS. RESULTS: n = 105. In univariate analysis, the grade of the appendiceal tumor, systematically reviewed in an expert center, showed an OR of 25.00 (95 % CI: 3.30-189.27; p = 0.001) and an NPV of 93.75 [85.36, 100]. Peritoneal biopsy demonstrated an OR of 19.80 (95 % CI: 2.30-170.71; p = 0.002) and a PPV of 90 [71.41, 100]. In multivariate analysis, these two factors remained significantly associated with PMP grade. CONCLUSION: Whenever appendiceal tumor is low grade on preoperative histology, the colon has to be spared unless completeness of CRS is compromised, which is a high-grade feature in fact. In case of high grade appendiceal tumor and/or peritoneal biopsy, right-sided hemicolectomy is warranted. If no histology is available preoperatively, adapt to intraoperative lesions as no preoperative factors seem to be predictive.
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Neoplasias del Apéndice , Colectomía , Procedimientos Quirúrgicos de Citorreducción , Quimioterapia Intraperitoneal Hipertérmica , Clasificación del Tumor , Neoplasias Peritoneales , Seudomixoma Peritoneal , Humanos , Procedimientos Quirúrgicos de Citorreducción/métodos , Neoplasias del Apéndice/patología , Neoplasias del Apéndice/cirugía , Neoplasias del Apéndice/terapia , Femenino , Masculino , Neoplasias Peritoneales/patología , Neoplasias Peritoneales/terapia , Neoplasias Peritoneales/cirugía , Persona de Mediana Edad , Quimioterapia Intraperitoneal Hipertérmica/métodos , Estudios Retrospectivos , Seudomixoma Peritoneal/patología , Seudomixoma Peritoneal/cirugía , Seudomixoma Peritoneal/terapia , Anciano , Estudios Prospectivos , Estudios de Seguimiento , Pronóstico , Adulto , Hipertermia Inducida/métodos , Cuidados Preoperatorios , Terapia CombinadaRESUMEN
AIM: Complete mesocolic excision (CME) is becoming an oncological surgical principle day by day for right hemicolectomy. However, the procedure is technically difficult and carries a higher risk of complications than open surgery. In this study, the adequacy of YouTube videos that facilitate education for laparoscopic right hemicolectomy with complete mesocolic excision (LRHCME) was investigated. METHODS: In July 2024, in the search bar of the YouTube platform, the term "laparoscopic right hemicolectomy complete mesocolic excision" was searched. The first 100 videos in each search were evaluated. Animations, advertisements, lectures, non-surgical videos (pre-surgery, post-surgery vlog, etc.), and non-English videos were excluded from the study. Steps identified in the Delphi consensus were used to determine the reliability of the videos. The quality of the videos was measured using the Global Quality Scale (GQS) and the modified DISCERN score. RESULTS: Seventy videos were included in the evaluation. While 28 (40%) of these videos were classified as reliable, 42 (60%) were not found reliable. In reliable videos, video description, HD resolution, GQS, modified DISCERN, and duration were significantly higher (p-value <0.001, 0.012, <0.001, <0.001, 0.041 respectively). Reliable videos had a better rank than unreliable videos (p=0.046). CONCLUSION: When evaluated according to Delphi consensus, the most of LRHCME videos on the YouTube platform were unreliable. We conclude that YouTube alone is insufficient for learning LRHCME without a professional instructor.
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A study on clinical outcomes and prognostic factors in T4N0M0 colon cancer patients after R0 resection revealed that ileostomy, T stage, right hemicolectomy, irregular follow-up, and CA199 level were independent risk factors affecting overall survival. T4-stage cancer invades the entire thickness of the intestinal tract, increasing the difficulty of treatment and the risk of recurrence, and requires a combination of chemotherapy, immunotherapy, and targeted therapy to control the spread of cancer cells. The prognosis of right hemicolectomy is significantly worse than that of left hemicolectomy, and right hemicolectomy is an independent risk factor for a poor prognosis. Advanced age, histopathological type, and lymph node metastasis are also risk factors for colon cancer.
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INTRODUCTION AND IMPORTANCE: Incidental detection of neuroendocrine tumors (NETs) of the appendix is rare, often discovered during surgeries for other conditions. This report emphasizes the importance of thorough pathological evaluations in colorectal surgeries. CASE PRESENTATION: A 48-year-old male presented with intermittent abdominal pain, weight loss, and altered bowel habits. Colonoscopy and biopsy confirmed adenocarcinoma of the right colon. The patient underwent a right hemicolectomy. Histopathological examination revealed a moderately differentiated adenocarcinoma of the ascending colon (pT3N2b) and an incidental 0.8 cm well-differentiated NET at the tip of the appendix. The NET was low-grade (G1) with no lymphovascular invasion or metastasis. The patient received adjuvant chemotherapy with oxaliplatin and capecitabine for the colonic adenocarcinoma. The incidental NET did not alter the chemotherapy regimen due to its low-risk features. DISCUSSION: Although, the presence of the NET did not alter the chemotherapy regimen, given its small size and low-grade nature. However, the discovery of this incidental tumor highlights the need for diligent follow-up, as patients with synchronous tumors may have an increased risk of recurrence or development of new malignancies. CONCLUSION: This case highlights the significance of meticulous pathological examination in colorectal surgeries, as incidental findings can significantly impact patient management and follow-up. Despite the typically indolent nature of small appendiceal NETs, their detection is crucial for accurate staging and appropriate patient care.
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INTRODUCTION AND IMPORTANCE: Acute appendicitis is a common cause of acute abdomen worldwide. The complications associated with it can sometimes be unpredictable and pose a dilemma in the management of such complications. CASE PRESENTATION: A case of 18 year female with complaints of right iliac fossa pain and vomiting was diagnosed clinically as acute appendicitis and underwent emergency open appendectomy where a cecal perforation was encountered intra-operatively for which a Modified Graham's Patch Repair was done. CLINICAL DISCUSSION: Acute appendicitis can sometimes present with complications like perforation, among which cecal perforation is rare and difficult to diagnose in the initial setting. Perforated appendicitis or colon can increase morbidity and mortality significantly. High degree of suspicion and early surgical approach can lead to identification of rare complications, which can still pose a surgical dilemma on the approach of management. CONCLUSION: Cecal perforation in suspected acute appendicitis is a rarely encountered intra operative complication. Management approaches can range from less invasive suture with omental patch repair to more invasive right hemicolectomy.
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BACKGROUND: Retrospective studies and randomized controlled trials support the safety of laparoscopic complete mesocolic excision (CME) for the treatment of right-sided colon cancer (RSCC). Few studies, however, examine the learning curve of this operation and its impact on safety during an implementation period. We aim to evaluate the learning curve and safety of the implementation of laparoscopic CME with intracorporeal anastomosis for RSCC. METHODS: Consecutive patients undergoing a laparoscopic right colectomy with intracorporeal anastomosis for RSCC between January 2016 and June 2023 were included. Clinical, perioperative, and histopathological variables were collected. Correlation and cumulative sum (CUSUM) analyses between the operating time and case number were performed. Breakpoints of the learning curve were estimated using the broken-line model. CME and conventional laparoscopic right colectomy outcomes were compared after propensity score matching (PSM). RESULTS: Two hundred and ninety patients underwent laparoscopic right colectomy during study period. One hundred and eight met inclusion criteria. After PSM, 56 non-CME and 28 CME patients were compared. CME group had a non-statistically significant tendency to a longer operating time (201 versus 195 min; p = 0.657) and a shorter hospital stay (3 versus 4 days; p = 0.279). No significant differences were found in total complication rates or their profile. Correlation analysis identified a significant trend toward operating time reduction with increasing case numbers (Pearson correlation coefficient = - 0.624; p = 0.001). According to the CUSUM analysis, an institutional learning curve was deemed completed after 13 cases and the broken-line model identified three phases: learning (1-6 cases), consolidation (7-13 cases), and mastery (after 13 cases). CONCLUSION: The learning curve of laparoscopic CME for RSCC can be achieved after 13 cases in centers with experience in advanced laparoscopic surgery and surgeons with familiarity with this technique. Its implementation within this setting seems to be as safe as performing a conventional right colectomy.
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Anastomosis Quirúrgica , Colectomía , Neoplasias del Colon , Laparoscopía , Curva de Aprendizaje , Mesocolon , Tempo Operativo , Puntaje de Propensión , Humanos , Laparoscopía/métodos , Laparoscopía/educación , Colectomía/métodos , Colectomía/educación , Masculino , Neoplasias del Colon/cirugía , Neoplasias del Colon/patología , Femenino , Mesocolon/cirugía , Anastomosis Quirúrgica/métodos , Anastomosis Quirúrgica/educación , Persona de Mediana Edad , Anciano , Estudios Retrospectivos , Complicaciones Posoperatorias/epidemiología , Complicaciones Posoperatorias/etiología , Tiempo de Internación/estadística & datos numéricosRESUMEN
Purpose: Intracorporeal anastomosis (IA) in laparoscopic right hemicolectomy has been associated with faster recovery in bowel function compared to extracorporeal anastomosis (EA). However, the technical difficulty of laparoscopic suturing technique and intraabdominal fecal contamination hinder many surgeons from implementing such a procedure. We introduce and compare a bridging technique designated as "semi-extracorporeal" anastomosis (SEA), which embraces the advantages and amends the drawbacks of IA and EA. Methods: Between May 2016 and October 2022, 100 patients who underwent laparoscopic right hemicolectomy were analyzed. All patients who received laparoscopic right hemicolectomy underwent one of the 3 anastomosis methods (EA, SEA, and IA) by a single colorectal surgeon at a single tertiary care hospital. Data including perioperative parameters and postoperative outcomes were analyzed by each group. Results: A total of 100 patients were reviewed. Thirty patients underwent EA; 50 and 20 patients underwent SEA and IA, respectively. Operation time (minute) was 170 (range, 100-285), 170 (range, 110-280), and 147.5 (range, 80-235) in EA, SEA, and IA, respectively (P = 0.010). Wound size was smaller in SEA and IA compared to EA (P < 0.001). IA was associated with a shorter time (day) to first flatus compared to SEA and EA (4 [range, 2-13] vs. 4 [range, 2-7] vs. 2.5 [range, 1-4], P < 0.001). Postoperative complication showed no statistical significance between the 3 groups. Conclusion: Semi-extracorporeal was an attractive bridging option for colorectal surgeons worrisome of the technical difficulty of IA while maintaining faster bowel recovery and smaller wound incisions compared to EA.
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Managing colon cancer with intestinal nonrotation, a type of congenital intestinal malrotation, is challenging due to the presence of anatomical abnormalities and severe adhesions. When patients have nonrotation, it is markedly more difficult to determine which vessels correspond to the colic vessels and ileal vessels until all vascular branching patterns become evident. The optimal approach for right-sided colon cancer with intestinal nonrotation has yet to be established. In the present case of ascending colon cancer with intestinal nonrotation, we performed laparoscopic right hemicolectomy with D3 dissection using a modified cranial approach. This approach involves tracing, without resecting, branches from the superior mesenteric vein and superior mesenteric artery in a cranial-to-caudal manner until the ileocolic artery and ileocolic vein, which course toward the cecum, are identified, followed by the dissection of the colic vessels and lymph nodes in a caudal-to-cranial fashion.