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Internal hernias account for a minority of cases of intestinal obstruction. Within this group, internal hernias through the foramen of Winslow (FW) are an even rarer subcategory with a paucity of cases reported in the literature. We present a case of a 48-year-old female presenting with right upper quadrant pain akin to biliary colic with sonographic evidence of cholelithiasis. Her symptoms swiftly worsened, and she re-presented with symptoms of bowel obstruction. She was subsequently found to have a caecal volvulus herniating through the FW on computed tomography (CT). She underwent an emergency laparotomy to reduce the hernia and prevent further recurrence, which highlighted the importance of a comprehensive history and the increasing role of cross-sectional imaging in emergency surgery.

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We report a case of small bowel obstruction (SBO) caused by internal hernia from Meckel's diverticulum (MD). Abdominal CT scan showed an abnormal dilated blind-ending structure in continuity with the distal ileum in the right lower quadrant, suggesting Meckel's diverticulum. MPR images revealed a "double beak-sign" at the point of MD and a collapsed closed loop with mesenteric vessels converging to the diverticulum. Since the patient has no prior history of abdominal surgery, the diagnosis of internal hernia caused by Meckel's diverticulum was considered. On laparoscopic exploration, an abnormal orifice for internal hernia created by adhesion from the tip of Meckel's diverticulum to the adjacent mesentery was revealed, confirming the diagnosis. The patient was discharged after 7 days without postoperative complications. MD-associated internal hernia is a rare cause of small bowel obstruction and should be considered to avoid delay in treatment. Multidetector Computed Tomography (MDCT) is the first-line imaging modality of choice and may offer some suggestive imaging features to make an accurate preoperative diagnosis.

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Internal hernias are relatively uncommon occurrences in cases of mechanical bowel obstructions. They occur when the small bowel herniates through a recess or defect within the abdominal cavity. Herniation through a defect in the broad ligament is particularly rare among internal herniations. We present the case of an 88-year-old female who presented to the emergency department with a history of abdominal pain and obstipation. The patient had undergone open tubectomy 43 years ago. Erect abdominal radiograph and contrast-enhanced computed tomography confirmed the presence of intestinal obstruction. Exploratory laparotomy revealed a viable small intestinal loop herniating through a defect in the right broad ligament. The herniated bowel loop was reduced, and the defect was closed. The contralateral side was examined to confirm the absence of defects in the left broad ligament. Early diagnosis of internal hernia through broad ligament defect requires a high index of suspicion, and the advent of computed tomography has facilitated early preoperative diagnosis. Rapid management is necessary to prevent catastrophic sequelae such as strangulation and gangrenous changes in the herniated bowel.

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Paraduodenal hernias are a rare but important clinical entity, as their presentation can be life-threatening if not properly diagnosed and managed appropriately. Additionally, this entity is defined by a unique and complex congenital anatomical abnormality which dictates a specific treatment algorithm. Here we present the cases of three patients from our clinical experience who all presented with either acute or chronic small bowel obstructions secondary to paraduodenal hernias. Two were left-sided paraduoenal hernias and one was right-sided. All three patients were successfully managed with surgical intervention. An appreciation of paraduodenal hernias, including the defining anatomy and methods of surgical management, is important for the general surgeon.

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Small bowel obstruction is one of the most common urgent surgical conditions, caused by a variety of factors, with adhesions, malignancies, and hernias, internal and external, being the most common. Many types of internal hernias have been described in the literature; however, internal hernia caused by the ureter as a secondary complication of ureteroplasty is rare and only a few cases have been reported worldwide. This presentation discusses an interesting case of small bowel obstruction accompanied by obstruction of the urinary tract due to an internal hernia caused by the ureter. A 58-year-old female presented to the emergency department (ED) with acute pain in the abdominal and right lumbar region. Her surgical history includes hysterectomy, right ureter injury, and ureteroplasty performed 10 years ago. Clinical examination showed tenderness in the lower abdomen, positive Giordano's sign on the right, and metallic bowel sounds. A computer tomography scan revealed right-sided hydronephrosis, absence of excretion in the right urinary tract, and dilated loops of the small intestine. An exploratory laparoscopy revealed a small bowel loop strangulated by the ureter, followed by laparotomy, resection of a segment of the ileum, oblique anastomosis, and reimplantation of the right ureter. The patient was discharged eight days postoperatively without any complications. This case underscores the significance of surgical history in order to recognize even rarer causes of small bowel obstruction.

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BACKGROUND: The preservation of the left colic artery (LCA) has emerged as a preferred approach in laparoscopic radical resection for rectal cancer. However, preserving the LCA while simultaneously dissecting the NO.253 lymph node can create a mesenteric defect between the inferior mesenteric artery (IMA), the LCA, and the inferior mesenteric vein (IMV). This defect could act as a potential "hernia ring," increasing the risk of developing an internal hernia after surgery. The objective of this study was to introduce a novel technique designed to mitigate the risk of internal hernia by filling mesenteric defects with autologous tissue. METHODS: This new technique was performed on eighteen patients with rectal cancer between January 2022 and June 2022. First of all, dissected the lymphatic fatty tissue on the main trunk of IMA from its origin until the LCA and sigmoid artery (SA) or superior rectal artery (SRA) were exposed and then NO.253 lymph node was dissected between the IMA, LCA and IMV. Next, the SRA or SRA and IMV were sequentially ligated and cut off at an appropriate location away from the "hernia ring" to preserve the connective tissue between the "hernia ring" and retroperitoneum. Finally, after mobilization of distal sigmoid, on the lateral side of IMV, the descending colon was mobilized cephalad. Patients'preoperative baseline characteristics and intraoperative, postoperative complications were examined. RESULTS: All patients' potential "hernia rings" were closed successfully with our new technique. The median operative time was 195 min, and the median intraoperative blood loss was 55 ml (interquartile range 30-90). The total harvested lymph nodes was 13.0(range12-19). The median times to first flatus and liquid diet intake were both 3.0 days. The median number of postoperative hospital days was 8.0 days. One patient had an injury to marginal arterial arch, and after mobolization of splenic region, tension-free anastomosis was achieved. No other severe postoperative complications such as abdominal infection, anastomotic leakage, or bleeding were observed. CONCLUSIONS: This technique is both safe and effective for filling the mesenteric defect, potentially reducing the risk of internal hernia following laparoscopic NO.253 lymph node dissection and preservation of the left colic artery in rectal cancer surgeries.

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Obesity is an emerging worldwide health care issue. It has a direct and indirect bearing on health-related outcomes. Rates of overweight and obesity have grown manifold in the past few decades globally. Once considered a problem of the affluent societies only, obesity is now dramatically on the rise in low- and middle-income countries also. Single anastomosis gastric bypass (SAGB) is one of the combined bariatric procedures adopted for weight loss in patients failing maximal medical therapy. Internal hernia (IH) after SAGB is a less recognized clinical entity. We hereby report our experience with four such cases under light of current available literature. Bariatric procedures are associated with some short- and long-term limitations. IHs are among one of the dreaded complications associated with some bariatric procedures with rates reaching up to 16% after classic Roux-en-Y gastric bypass. The incidence of IH post-SAGB is comparatively rare and is very less frequently reported. Symptoms of IH post-SAGB are quite nonspecific and depend on the time and extent of herniation. The symptoms can vary from benign intermittent colicky pain to severe intra-abdominal pain presenting as a surgical emergency. Routine physical examination and biochemical investigations are nonspecific and unreliable in evaluating those patients. Computed tomography (CT) with intravenous and oral contrast is the most common imaging modality used for preoperative evaluation of those symptoms. The CT findings can be unremarkable in patients having intermittent symptoms/herniation. Diagnostic laparoscopy is the cornerstone for diagnosis and management of patients having high suspicion of IH.

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BACKGROUND: Meckel's diverticulum is a common congenital anomaly of the gastrointestinal tract, with a higher incidence rate in children under 7 years old. The condition is characteristically asymptomatic but may become a clinical concern when complications such as intestinal obstruction, bleeding, perforation, or diverticulitis precipitate acute abdominal presentations. CASE SUMMARY: This report describes the case of a middle-aged man initially suspected of having acute appendicitis, which rapidly progressed to acute peritonitis with concomitant intestinal obstruction observed during preoperative assessment. Surgical exploration confirmed the diagnosis of Meckel's diverticulum-induced internal hernia, accompanied by intestinal obstruction and necrosis. In addition, the hernial ring base exhibited entrapment resembling a surgical knot. CONCLUSION: Meckel's diverticulum is a rare cause of small bowel obstruction in adults, and it should be considered in a differential diagnosis.

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This is a case report of an 82-year-old male who presented with intractable and diffuse abdominal pain and had a computed tomography (CT) abdomen showing a closed loop obstruction in the right hemiabdomen with anteromedial displacement of the cecum and ascending colon. Exploratory laparotomy revealed a gangrenous segment of the ileum strangulated by a transomental hernia in the right lower quadrant. The nonviable bowel was resected, and the healthy bowel segments were anastomosed. It is important to correlate the clinical signs of bowel obstruction with radiographic findings of internal hernia to expedite surgical intervention and prevent complications of bowel ischemia.

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This is a case report of a man in his 60s who was diagnosed with a small bowel obstruction due to an internal hernia caused by a ureterocutaneous fistula. Internal hernia caused by the ureter following urinary diversion is rare, posing challenges in preoperative diagnosis and carrying the risk of intraoperative injury due to the resemblance of a ureterocutaneous fistula to an adhesive band. The presentation and surgical management are discussed in this case report.

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Transmesenteric internal hernia is an uncommon cause of small bowel obstruction that occurs when small bowel loops protrude through a mesenteric defect into the abdominal cavity. Herein, we present an unexpected case of colonoscopy-induced transmesenteric internal hernia. An 81-year-old male patient presenting with intermittent hematochezia and constipation had undergone a laparoscopic left nephrectomy for ureteral cancer. A colonoscopy was performed to identify the etiology of his symptoms. He complained of severe abdominal pain 2 h after the examination despite uneventful endoscopic procedures, including cold snare polypectomy. Contrast-enhanced computed tomography revealed a strangulated small bowel obstruction with a closed-loop formation outside the descending colon. The small bowel loop was incarcerated into the left retroperitoneal space. Emergency laparotomy detected small bowel loops that prolapsed into the nephrectomy pedicle via a descending mesenteric defect, developed during the laparoscopic left nephrectomy. The incarcerated small bowel was detached from the hernia and returned to its normal position, and the mesenteric defect was closed. He demonstrated an uneventful postoperative course, with no internal hernia recurrence after discharge. This case indicates the risk of transmesenteric internal hernia through inadvertently created mesenteric defects should be borne in mind, especially when performing colonoscopies in patients who underwent laparoscopic nephrectomies.

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Adult intestinal malrotation along with congenital transverse-mesocolic internal hernia causing small bowel obstruction is extremely rare. Most of these patients don't have any obvious clinical symptoms. Only a few cases have been documented in the English literature. We present the unique case of a 43-year-old male without any prior surgical history who presented with nonspecific abdominal pain and was diagnosed with malrotation of the small intestine by computed tomography (CT) scan and underwent exploratory laparotomy found to have internal herniation through the transverse-mesocolon. The patient underwent an emergency laparotomy; a Ladd's procedure and repair of the hernial orifice were performed. This case highlights the association of adult intestinal malrotation with internal hernias and small bowel obstruction; it also explores the importance of timely diagnosis and adequate management of this condition.

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Herniation of bowel contents between the peritoneal cavity proper and the omental bursa, through the foramen of Winslow, can present diagnostic challenges that can potentially delay necessary surgical intervention. This case describes a 49-year-old female with a past medical history of hiatal hernia and biliary dyskinesia who presented to the emergency department with severe epigastric and right lower quadrant abdominal pain one day after a reported gastrointestinal illness of unknown etiology. Initial emergency department workup demonstrated an elevated white blood cell count without lactic acidosis. Computed tomography imaging was interpreted as gastric distension with volvulus around the mesentery and second portion of the duodenum. Intraoperatively, the entirety of the right colon was noted to have passed through the foramen of Winslow into the lesser sac. This led to twisting of the mesocolon causing compression of the duodenum and a gastric outlet obstruction. After surgical reduction of the herniation, the patient noted great improvement in pain and other symptoms.

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INTRODUCTION: Internal hernia (IH) after Roux-Y gastric bypass (RYGB) can lead to extended small bowel ischemia if it not recognized and treated promptly. The aim of this study is to show whether improvement in mesenteric defect (MD) closure reduces the incidence of IH. PATIENTS AND METHODS: Retrospective analysis of prospectively collected data from our database including all patients who underwent laparoscopic RYGB between 1999 and 2015. The usual technique was a retrocolic/retrogastric RYGB. We divided patients in four groups according to the closure technique for MD and compared incidences of IH between groups. All patients had at least 8 years of follow-up. RESULTS: A total of 1927 patients (1497 females/460 males, mean age of 41.5 ± 11 years) were operated. A retrocolic/retrogastric RYGB was performed in 1747 (90.7%) and an antecolic RYGB in 180 patients. Mean duration of follow-up was 15 (8-24) years. 111 patients (5.8%) developed IH, the majority through the jejunojejunostomy (JJ, 3.7%) and Petersen (1.7%) defects. With improvement of closure technique, the incidence decreased over time, from 12.9% in the group with separate sutures to 1.05% in the most recent group with running non-absorbable sutures and an additional purse-string at the JJ defect (p < 0.0001). CONCLUSION: Meticulous closure of MD during RYGB is a very important step that significantly reduces the IH risk after RYGB, even with a retrocolic/retrogastric anatomy. Using running non absorbable braided sutures and an additional purse-string suture at the JJ is the most effective technique, but a small IH risk persists. A high index of suspicion remains necessary in patients who present with acute abdominal pain after RYGB.

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Gastric bypass surgery is a common and effective procedure for obesity and associated comorbidities. However, long-term complications, such as internal hernias, can pose diagnostic and therapeutic challenges. Internal hernias after gastric bypass are rare but can lead to severe complications, including volvulus and bowel ischemia. Understanding the anatomical variations and employing laparoscopic techniques for resolution are crucial in managing these cases.

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INTRODUCTION: Few cases of intestinal obstruction after colostomy are caused by internal hernia. Some institutions perform stomas through the extraperitoneal route because some patients experience an internal hernia outside the stoma performed through the intraperitoneal route. PRESENTATION OF CASE: A 72-year-old woman presented with a history of laparoscopic abdominoperineal resection (APR). A sigmoid colostomy was performed via the extraperitoneal route during APR. One month after APR, the patient presented to the emergency department of our hospital with abdominal pain and vomiting. Computed tomography revealed that the small intestine had passed through the extraperitoneal tunnel, resulting in strangulated intestinal obstruction, and emergency laparotomy was performed. During surgery, the ileum passed behind the elevated sigmoid colon in a caudal-to-cranial direction and formed an unusual closed loop. The strangulated part of the small intestine showed ischemic change; however, the intestine quickly normalized soon after strangulation was released, and the operation was completed without resection of the intestine. DISCUSSION: The major cause of intestinal obstruction after colostomy is intraperitoneal adhesion. Looseness of the elevated sigmoid colon can cause internal hernia, if under pneumoperitoneum, when a colostomy is created through the extraperitoneal route in laparoscopic APR. Furthermore, the patient had lost more than 5 kg of body weight after the surgery, which may have led to the looseness of the elevated sigmoid colon. CONCLUSION: Releasing the pneumoperitoneum during the elevation of the sigmoid colon is necessary to prevent internal hernia, even with a colostomy performed through the extraperitoneal route.1.

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Cecal bascule, a rare subtype of cecal volvulus, presents diagnostic and management challenges. We report a case of cecal bascule presenting as an internal hernia in a 68-year-old male with no surgical history. Computed tomography revealed two areas of mesenteric swirling and a displaced cecum. Prompt surgical intervention included laparoscopic exploration, resection of a necrotic adhesive band, and cecopexy. This case is noteworthy because of the absence of predisposing factors like prior surgeries or inflammatory conditions. Management options for cecal bascule include resection and cecopexy, tailored to individual patient factors. Awareness among healthcare providers is crucial for the timely recognition and appropriate management of such cases. Further research is needed to refine management strategies and improve outcomes for these rare but potentially life-threatening conditions.

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INTRODUCTION: To explore the diagnostic value of high-resolution ultrasound combined with multi-slice computer tomography (MSCT) for pediatric intra-abdominal hernias (IAHs), and to analyze the potential causes for missed diagnosis and misdiagnosis of IAHs in children. METHODS: A retrospective analysis was conducted on 45 children with surgically confirmed IAHs. The diagnostic rate of IAHs by preoperative high-resolution ultrasound combined with MSCT was compared with that of intraoperative examination, and the potential causes for missed diagnosis and misdiagnosis by the combination method were analyzed. RESULTS: Forty-five cases of pediatric IAHs were categorized into primary (25/45, 55.5%) and acquired secondary hernias (20/45, 44.5%). Among children with primary hernias, mesenteric defects were identified as the predominant subtype (40%). Acquired secondary hernias typically resulted from abnormal openings in the abdominal wall or band adhesions due to trauma, surgery, or inflammation. In particular, adhesive band hernias were the major type in children with acquired secondary hernias (40%). The diagnostic rate of high-resolution ultrasound was 77.8%, with "cross sign" as a characteristic ultrasonic feature. Among 10 cases of missed diagnosis or misdiagnosis, 5 were finally diagnosed as IAHs by multi-slice computer tomography (MSCT). Overall, the diagnostic rate of pediatric IAHs by preoperative ultrasound combined with radiological imaging reached 88.9%. DISCUSSION: IAHs in children, particularly mesenteric defects, are prone to strangulated intestinal obstruction and necrosis. High-resolution ultrasound combined with MSCT greatly enhances the diagnostic accuracy of pediatric IAHs.

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Lesser omental hernias are rare; however, they should be considered in symptomatic bowel obstruction subsequent to a subtotal or total colectomy. This report describes two cases of recurrent bowel obstruction secondary to lesser omental hernias after laparoscopic total colectomies for ulcerative colitis. Initially, these patients had been treated conservatively; however, due to symptom recurrence, surgical intervention was decided on. In both cases, laparoscopic surgery revealed lesser omental hernias. The small bowel, which had entered from the dorsal aspect of the stomach, was returned to the original position, and the lesser omentum was closed. The patients were discharged uneventfully, with no recurrent bowel obstruction during the follow-up period. These cases highlight the importance of including internal hernias in the differential diagnosis relative to recurrent bowel obstruction, in patient subpopulations with a prior history of a subtotal or total colectomy. Confirmation by computed tomography is preferable.

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PURPOSE: Laparoscopic Roux-en-Y Gastric Bypass (LRYGB) remains the most effective procedure to treat severe obesity with proven short- and intermediate-term benefits. The main goal is to describe the effects on weight and biochemical laboratory tests after long-term follow-up (11 years). MATERIALS AND METHODS: A prospective cohort of adults with obesity treated with LRYGB between 2004 and 2010 in one center were studied. Patients with prior bariatric or upper digestive tract surgery, hiatal hernia >4 cm, alcoholism, or decompensated conditions were excluded. The study enrolled 123 patients, with a mean follow-up of 133±29 months and a 14% loss of participants. RESULTS: The percentage of Total Weight Loss (%TWL) at one, five, and eleven years was 30.3±8.4%, 29.1±6.9%, and 23.4±7%, respectively. Of the patients, 61.3% (65/106) maintained a %TWL≥20 after eleven years. Recurrent Weight Gain (RWG) at five and eleven years was 2.6±11.4% and 11 ±11.5%, respectively. At the end of the follow-up, 31.1% (33/106) of patients had RWG≥15%. Hypercholesterolemia and hypertriglyceridemia improved in 85.7% (54/63) and 90.2% (7/61) of the cohort, respectively. Remission of diabetes occurred in 80% of this subgroup. Gallstones developed in 28% of patients, and bowel obstruction due to internal hernia occurred in 9.4%. Anemia due to iron deficiency appeared in 25 patients. CONCLUSION: After surgery, there is a significant and durable loss of weight, with a tendency for late Recurrent Weight Gain. Furthermore, the improvement in biochemical parameters is sustained over time, but surgery's adverse effects may appear later.

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