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INTRODUCTION: Groin hernia is one of the most commonly managed surgical diseases around the world. The typical question asked by patients is "Does my hernia require urgent surgery?". The currently available classifications are insufficient to stratify patients into different groups. We propose a new classification that incorporates diverse clinical elements together with anatomical and other vital information, which allows us to stratify patients into different groups. METHOD: A task force was formed by the Hong Kong Hernia Society, working with international expert hernia surgeons. The framework of the classification system was formulated. Clinical elements that are important in groin disease stratification were identified. A comprehensive literature review was conducted using PubMed. Those which dictate the severity of the disease were selected and compiled to form the new proposed classification. Application of this classification model to a single hernia surgeon's registry in The Hong Kong Adventist Hospital Hernia Centre was done for initial evaluation. RESULT: This new classification incorporates important clinical characteristics forming a total of nine grades of differentiation, together with the anatomical details and special information. This comprehensive system allows the stratification of patients into different groups based on disease severity. It also enables more accurate data collection for future audits, comparisons of disease progression over time, and the effect of different management strategies for different-stage patients. CONCLUSION: This is the first classification system which incorporates essential clinical parameters, which allows the stratification of groin hernia into different stages. Further studies and validation should be performed to evaluate the usefulness and value of this classification in groin hernia management.

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PURPOSE: Obturator hernia is a rare disease and preoperative diagnosis is always difficult. There are increasing reports employing laparoscopic approach in the recent literature. Our aim was to review and compare the open and laparoscopic approach in repairing obturator hernia. METHODS: All patients with obturator hernia from 1997 to 2011 were recruited. Patient's demographics, presentation, operative details, morbidity, and mortality were retrospectively collected and reviewed. RESULTS: There were 36 patients during the 15-year period. All of them were elderly ladies (median 83). Nineteen underwent open surgery while 16 received laparoscopic surgery. Both age and ASA were comparable. The median operative time was 68 and 65 min for laparoscopic and open group, respectively (p = 0.690). The median hospital stay was significantly longer in the open group (19 vs 5 days, p = 0.007). There were less major complications (p = 0.004) and mortality (p = 0.049) in the laparoscopic group. Two recurrences were reported in the laparoscopic group, although statistically not significant (p = 0.202). CONCLUSIONS: Laparoscopic repair can achieve a shorter hospital stay and has lesser major complications and mortality in selected patients.

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INTRODUCTION: Given the limitation of surgical access and instrumentation, pure NOTES technique currently appears challenging for colorectal surgery. As such, we would like to determine the technical feasibility and clinical results of hybrid NOTES right hemicolectomy with transrectal extraction of specimen. MATERIALS AND SURGICAL TECHNIQUE: After the right-sided colon was fully mobilized and vessels ligated, bowel resection and intracorporeal side-to-side ileocolic anastomosis were performed with endostaplers. The Transanal Endoscopic Operations device was inserted transanally. The resected specimen was removed via the Transanal Endoscopic Operations device through an enterotomy made over the anterior wall of the upper rectum. DISCUSSION: The operation was performed on a 42-year-old woman and lasted 120 minutes; blood loss was 30 mL. The patient had an uneventful recovery and was discharged on postoperative day 5. The median pain score was 2 (range, 2-3). Our preliminary experience shows that hybrid NOTES right hemicolectomy is safe and feasible. The technique eliminates the need for mini-laparotomy in patients undergoing laparoscopic right hemicolectomy, and it offers promise in this era of minimally invasive surgery.

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INTRODUCTION: Currently transabdominal pre-peritoneal and totally extraperitoneal repairs are the two standard laparoscopic approaches for groin hernia repair. However, they are still largely reserved for uncomplicated elective cases. To determine whether laparoscopic groin hernia repair can achieve similar results for acute strangulated hernias as laparoscopic cholecystectomy for acute cholecystitis, we analyzed and compared the results of emergency laparoscopic surgery and open repair for strangulated groin hernias performed by our team over the past 4 years. METHODS: This is a retrospective analysis of prospectively collected data. We analyzed the results of patients admitted between January 2007 and January 2011 who were diagnosed with acute strangulated groin hernia and underwent emergency open or laparoscopic hernia repair during the same admission. Patients' demographic details, mode of presentation, type of hernia, intraoperative findings, operative time, postoperative course and complications were compared. RESULTS: In total, 188 patients fulfilled the criteria for emergency surgical repair of strangulated groin hernias; 57 received laparoscopic and 131 received open repairs. The mean operative time was 79.82 ± 29.571 min and 80.75 ± 35.161 min, respectively. More laparotomies were performed in the open group (19 vs 0). The wound infection rate was significantly higher in the open group (12 vs 0). The mean hospital stay was shorter in the laparoscopic group (4.39 days vs 7.34 days). There was no mesh infection in either group. Recurrence occurred one case in the laparoscopic group and in three cases in the open group. CONCLUSIONS: Emergency laparoscopic repair for strangulated groin hernias is feasible and appears to have a lower morbidity relative to open repair. Further study should be performed to evaluate its full potential.

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AIM: Laparoscopic colectomy for colorectal cancer is associated with definite short-term benefits, and is increasingly practised worldwide. The limitations of a pure laparoscopic approach include a relative lack of tactile feedback and long procedural time. Hand-assisted laparoscopic surgery was introduced in an attempt to facilitate operation by improving the tactile sensation. To date, there is no consensus as to which approach is better. Herein we conducted a randomized controlled trial comparing hand-assisted laparoscopic colectomy (HALC) with total laparoscopic colectomy (TLC) in the management of right-sided colonic cancer. METHODS: Adult patients with carcinoma of the caecum and ascending colon were recruited and randomized to undergo either HALC or TLC. Measured outcomes included operative time, blood loss, conversion rate, postoperative morbidities, postoperative pain, length of hospital stay, disease recurrence and patient survival. RESULTS: Sixty patients (HALC=30, TLC=30) were recruited. The two groups were comparable with regard to age, gender distribution, body mass index and final histopathological staging. No difference was observed between the groups in terms of operating time, conversion rate, operative blood loss, pain score and length of hospital stay. With a median follow-up of 27 to 33 months, no difference was observed in terms of disease recurrence, and the 5-year survival rates remained similar (83%vs 80%, P=0.923). CONCLUSION: HALC is safe and feasible, but it does not show any significant benefits over TLC in terms of operating time and conversion rate. Routine use of the hand-assisted laparoscopic technique in right hemicolectomy is therefore not recommended.

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OBJECTIVE: To review the site of involvement, clinical presentation, and treatment outcome of patients having immunoglobulin G4-related sclerosing disease in a local regional hospital. DESIGN: Retrospective case series. SETTING: Pamela Youde Nethersole Eastern Hospital, Hong Kong. PATIENTS: All patients with a diagnosis of immunoglobulin G4-related sclerosing disease in the hospital diagnosed in the period from April 2008 to March 2010. RESULTS: A total of 12 patients with involvement of various organs were identified. There was a male predominance (male-to-female ratio=5:1). The mean age at diagnosis was 65 years. The salivary glands, biliary tract, pancreas, and cervical lymph nodes were the commonest involved sites. The immunoglobulin G4 level was elevated in 83% of the patients. Patients usually appeared to respond well to steroid treatment. CONCLUSION: Immunoglobulin G4-related sclerosing disease is a systemic disease and can involve various systems.

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AIM: Laparoscopic surgery for locally advanced tumours with extramural involvement is still controversial. It is believed that laparoscopic excision of T4 cancers is technically difficult and may result in prolonged operative time, increased conversion rate, added postoperative morbidity, and suboptimal oncological clearance. METHOD: Our unit has been practising laparoscopic colorectal surgery since 1992, and all data are entered into a database prospectively. Since 1999 we have routinely used the laparoscopic approach for colorectal cancer resections. Data regarding patients with a histologically T4 cancer operated on between 1999 and 2008 were analysed. Outcomes included operating time, conversion rate, postoperative complications and oncological outcome. RESULTS: Over a 10-year period, 146 patients (male 75) with a T4 cancer underwent laparoscopic resection. The median operating time was 125 (range, 46-285) min and the median blood loss was 50 (0-1800) ml. The conversion rate was 16%. Six (4.1%) patients experienced anastomotic leakage. The median number of lymph nodes harvested was 13 (2-40). One hundred and two (70%) patients underwent curative resection. The recurrence rates were 41% and 53% for stage II and III patients, respectively. Four (3.9%) patients had local recurrence. At a median follow up of 18 (1-118) months, the overall survival was 25 months, with median overall survival for patients with stage II, III and IV disease being 63, 36 and 12 months, respectively. CONCLUSION: Laparoscopic colectomy in histologically T4 cancer is safe. Oncological outcomes remain satisfactory. Based on our data, provided expertise is available, patients with locally advanced tumours should not be excluded from a laparoscopic approach.

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BACKGROUND: There is still no consensus on the ideal management of common bile duct (CBD) stones. This article aims to review the management of concomitant gallbladder stones and CBD stones in the laparoscopic era. METHOD: A PubMed database search was performed to identify MEDLINE articles from 1986 to 2010 using the key terms "common bile duct stones,""cholecystectomy,""bile duct exploration,""ERCP" (endoscopic retrograde cholangiography), and "endoscopic sphincterotomy." RESULTS: There were five randomized comparative trials (RCT) comparing sequential preoperative ERCP and laparoscopic cholecystectomy (LC) to laparoscopic common bile duct exploration (LCBDE). Two RCTs showed similar stone clearance rates and shorter hospital stays in the LCBDE group, while three RCTs showed similar stone clearance rates and hospital stays in sequential preoperative ERCP, LC and LCBDE groups. There were two RCTs comparing LCBDE to sequential LC and postoperative ERCP. One showed similar stone clearance rate and shorter hospital stay in LCBDE group, while the other showed similar stone clearance rate and hospital stay. There were three RCTs comparing sequential preoperative ERCP and LC against LC with intraoperative ERCP. All three studies showed similar stone clearance rates and shorter hospital stays in the intraoperative ERCP group. There was only one RCT comparing sequential preoperative ERCP and LC against sequential LC and postoperative ERCP. This showed a similar stone clearance rate and shorter hospital stay in the postoperative ERCP group. CONCLUSION: Different management approaches of concomitant gallbladder stones and CBD stones were equivalent in efficacy. However, one-stage management had the advantage of providing a shorter hospital stay.

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The most dreaded complication of a colonoscopy is colonic perforation. Perforation of the small bowel following colonoscopy is extremely rare, especially if the procedure was performed without any therapeutic intervention. Herein we report a case of jejunal perforation following a routine surveillance colonoscopy. A literature review focusing on the proposed mechanism of perforation is included.

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INTRODUCTION: Laparoscopic inguinal hernia repair is currently one of the most commonly performed minimally invasive surgical procedures. In recent years, single-incision operations have been developed to further reduce the invasiveness of the surgery. Herein, we report our early experience with single-incision laparoscopic inguinal hernia repair in Asia, with both the transabdominal preperitoneal (TAPP) and totally extraperitoneal (TEP) approaches. METHODS: This is a retrospective review of prospectively collected data on a cohort of consecutive patients with inguinal hernia who underwent single-incision laparoscopic inguinal hernia repair in a minimal access surgical center in Hong Kong between January 2010 and January 2011. RESULTS: Our cohort consists of 15 patients who underwent single-incision laparoscopic inguinal hernia; 13 were unilateral and two were bilateral hernias. The mean age was 59.8 years old (range, 28-74 years). The overall mean operative time was 59.53 min (range, 25-120 min). For unilateral hernia repair, the mean operative time was 56 min (range, 25-75 min) and 48.5 min (range, 41-55 min) for TAPP and TEP, respectively. In all cases single-incision laparoscopic hernia repair was successfully performed, no additional trocars were required, and there were no conversions to conventional laparoscopic or open inguinal hernia repair. All patients were discharged on the same day as the procedure. CONCLUSION: Single-incision laparoscopic inguinal hernia is feasible in both TEP and TAPP approaches. The procedure should be performed by laparoscopic surgeons with a high level of experience in single-incision surgery. Further randomized trials should be performed to evaluate the full potential and clinical application of single-incision TAPP and TEP.

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AIM: Total mesorectal excision (TME) is currently the gold standard for resection of mid or low rectal cancer and is associated with a low local recurrence rate. However, few studies have reported the long-term oncological outcome following use of a laparoscopic approach. The aim of this study was to evaluate the long-term oncological outcome after laparoscopic sphincter-preserving TME with a median follow up of about 4 years. METHOD: Patients with mid or low rectal cancer who underwent laparoscopic sphincter-preserving TME with curative intent between March 1999 and March 2009 were prospectively recruited for analysis. RESULTS: During the 10-year study period, 177 patients underwent laparoscopic sphincter-preserving TME with curative intent for rectal cancer. Conversion was required in two (1%) patients. There was no operative mortality. At a median follow-up period of 49 months, local recurrence had occurred in nine (5.1%) patients. The overall metastatic recurrence rate after curative resection was 22%. The overall 5-year survival and 5-year disease-free survival in the present study were 74% and 71%, respectively. CONCLUSION: The results of this study show that laparoscopic sphincter-preserving TME is safe with long-term oncological outcomes comparable to those of open surgery.

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OBJECTIVE: To compare the use of endorectal plus phased-array coils with use of phased-array coil alone with respect to the accuracy of magnetic resonance imaging for detecting mesorectal involvement of rectal cancer. DESIGN: Retrospective study. SETTING: A tertiary referral centre in Hong Kong. PATIENTS: Ethnic Chinese patients with rectal adenocarcinoma who underwent staging magnetic resonance imaging during the years 2003 to 2008 in our centre were selected; those who received preoperative neoadjuvant therapy were excluded. Unless otherwise contra-indicated, endorectal coils have been used since 2006. MAIN OUTCOME MEASURES: Magnetic resonance images were retrieved and reviewed by two radiologists blinded to the pathological results. The radiological findings were then correlated with the pathological reports to determine diagnostic accuracy. RESULTS: A total of 50 patients were studied; 13 of the examinations were in patients having an endorectal coil. The overall accuracy of magnetic resonance imaging in detecting mesorectal tumour involvement was 80%. Subgroup analysis showed higher accuracy in the group with endorectal coils than in those with phased-array coils alone. Over-detection of mesorectal involvement was noted in 12% of the cases, with lower rate being observed in patients with endorectal coils. Underdetection of mesorectal tumour involvement was only noted in the group without endorectal coils. With the use of endorectal coils, the sensitivity reached 100% and the specificity increased to 86%. CONCLUSION: Use of endorectal coil in staging magnetic resonance imaging of the rectum improves diagnostic accuracy. Whenever feasible, endorectal coil use is therefore recommendable to enhance diagnostic accuracy. The study results substantiate the understanding of staging by magnetic resonance imaging of rectal cancer in the local Chinese population.

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Immunoglobulin G4-related lymphoplasmacytic sclerosing disease is an emerging disease. Recently, it has been shown to be responsible for autoimmune pancreatitis-induced strictures of the bile duct mimicking cholangiocarcinoma. Making a diagnosis of immunoglobulin G4-associated sclerosing cholangitis requires a high index of suspicion. The differential diagnoses include primary sclerosing cholangitis, cholangiocarcinoma, and pancreatic cancer. The preoperative diagnosis is likely to be missed due to the lack of specific symptoms; a clinical presentation that may mimic other disorders, especially malignant biliary strictures; and the lack of specific imaging features. This article reports on a 51-year-old man with immunoglobulin G4-associated sclerosing cholangitis without autoimmune pancreatitis. He underwent resection of his extrahepatic bile duct with a hepaticojejunostomy. The diagnosis was confirmed after a histopathological examination. This case highlights the obstacles to making a preoperative diagnosis of immunoglobulin G4-associated sclerosing cholangitis.

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Laparoscopic colectomy for cancer is increasingly practiced worldwide in the last 2 decades. However, due to procedural complexity, laparoscopic rectal cancer excision had not proceeded at a similar pace. This article deals with the technique of laparoscopic anterior resection. Resection of rectosigmoid or upper rectal tumors is first described, followed by the more difficult sphincter-saving total mesorectal excision. We have been using and modifying this technique of laparoscopic anterior resection for rectal cancer since 1990 s. In our recent review, the local recurrence rate was 7.4%, and the overall 5-year survival was 70%. Our data suggest laparoscopic resection for rectal cancer is safe and is the procedure of choice in selected patients.

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BACKGROUND/AIMS: This study aims to evaluate the outcomes of percutaneous cholecystostomy for acute calculous cholecystitis in patients with high surgical risk and determine whether subsequent cholecystectomy is beneficial and necessary. Percutaneous cholecystostomy has been shown to be a safe treatment option for patients suffering from acute cholecystitis but at high risk for emergency surgery. Controversies still exist on the approach of the cholecystostomy and the subsequent management of these patients. METHODOLOGY: From January 1996 to March 2004, percutaneous cholecystostomy was performed on 65 patients that suffered from acute calculous cholecystostomy but were considered high risk for emergency surgery (American Society of Anesthesiologists grade III or IV). Their clinical outcomes were described and risk factors for in-hospital mortality and recurrence of cholecystitis were identified by univariate and multivariate analysis. RESULTS: Percutaneous cholecystostomy was successfully performed in all patients (100%). The clinical response rate was 91%. The in-hospital mortality was 12.3%. Shock on admission was found to be a single independent risk factor for in-hospital death (p=0.006; odd ratio = 16.5; 95% CI = 2.2-123.1). Twenty-four patients underwent subsequent cholecystectomy whereas 33 did not. The 1-year and 3-year recurrence of acute cholecystitis were 35% and 46% respectively in patients who did not have subsequent cholecystectomy. Stone size > or = 1cm was independently associated with higher recurrence of acute cholecystitis (p=0.01; hazard ratio = 6.3, 95% CI 1.6-25.5). However, there was no difference in 1-year and 3-year overall survival between patients with or without cholecystectomy (82% Vs 81% and 59% Vs 63%, p=0.79). CONCLUSIONS: Percutaneous cholecystostomy is a safe and promising treatment for acute calculous cholecystitis in patients who are at high risk for emergency surgery. Cholecystectomy after the resolution of cholecystitis and optimization of associated medical illnesses is always advisable in order to prevent recurrent cholecystitis. However, the limited survival of these patients because of their old age and medical co-morbidities should be taken into consideration.

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BACKGROUND/AIMS: To evaluate the results of laparoscopic exploration of the common bile duct (LECBD) in patients with previous gastrectomy. METHODOLOGY: This study is a retrospective review of a prospectively maintained database of LECBD during the period 1994-2005. Those cases of LECBD with previous open gastrectomy were sorted out and analyzed. Indications of operation included unsuccessful endoscopic extraction due to altered anatomy and some explorations were performed together with side-to-side choledochoduodenostomy so as to eliminate biliary stasis and decrease stone recurrence. The operation steps involved open insertion of trocar and creation of pneumoperitoneum, meticulous adhesiolysis, direct choledochotomy followed by clearance of biliary stones. After confirmed ductal clearance, the common bile duct was routinely closed with t-tube diversion. The perioperative parameters of these patients were analyzed and compared to those receiving open exploration of common bile duct due to previous gastrectomy during the same study period. RESULTS: Of the 184 LECBD performed between 1994 and 2005, 33 patients had previous open upper gastrointestinal operations and among them 18 LECBD were performed in post-gastrectomy patients (2 with previous classical Whipple's operation). There were 10 male and 8 female patients with mean age of 77.5 (58-97 years). Of the 14 patients undergoing preoperative endoscopic retrograde cholangiopancreatography, there were 10 failed cannulations and 4 failed extractions. Altogether 17 choledochotomies and 1 transcystic duct exploration was performed whereas 4 patients with recurrent primary stones received additional choledochoduodenostomy. Median operating time was 120 min (60-390 min). Open conversion was required in 3 patients (16.6%) because of jammed basket, extensive adhesion and "through & through" bile duct injury respectively. Postoperative complications occurred in 4 patients (22.2%), which included 3 bile leaks and also the previously mentioned bile duct injury. The median hospital stay was 9 days (4-82 days). Upon a median follow-up of 17.5 months, there was only 1 patient found to have recurrent common bile duct stone and he was managed by laparoscopic exploration and choledochoduodenostomy. When the results were compared to those 12 open explorations because of previous open gastrectomy, longer operation time (120 vs. 75 min, p=0.004) and slightly shorter hospital stay (9 vs. 14 days, p=0.104) were noted in the LECBD group but without increased complication rate (22.2 vs. 25%, p=1). CONCLUSIONS: These results suggest that LECBD is worth attempting even in patients with previous open gastrectomy.

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PURPOSE: The use of defunctioning ileostomy is a common practice to reduce the septic complications after anastomotic leakage in colorectal surgery. In open surgery, the fashioning of ileostomy is a straightforward procedure. However, in the laparoscopic approach, this can be a difficult task and obstructive complications can occur postoperatively. METHODS: A retrospective review was undertaken for all patients who underwent laparoscopic colorectal resection and defunctioning loop ileostomy over a 15-year period. RESULTS: In this period, 161 patients underwent laparoscopic colorectal surgery with defunctioning ileostomy. Eight patients developed obstructive complications in the early postoperative period requiring surgical intervention (5 percent). All patients presented with intestinal obstruction from the fourth to the sixth postoperative day. The median time to reoperation was 9.5 days (range, 5 to 19). The causes of obstructive complications were twisting of the ileostomy (n = 3), adhesive kinking proximal to the ileostomy (n = 3), tight fascia (n = 1), and both tight fascia and twisting of ileostomy (n = 1). Six patients underwent laparotomy for diagnosis and refashioning of ileostomy. The seventh patient had endoscopic decompression of small bowel and refashioning of ileostomy. The last patient was successfully managed with combined endoscopic and laparoscopic approach. CONCLUSIONS: Various pitfalls can occur in laparoscopically created defunctioning ileostomy. Measures can be taken to minimize these technical errors. Various surgical reinterventions can be attempted to determine the cause. With combined uses of enteroscope and laparoscope, a laparotomy can be avoided.

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PURPOSE: This study was designed to compare stapled vs. conventional hemorrhoidectomy for patients with acute thrombosed hemorrhoids. METHODS: Forty-one patients with acute thrombosed hemorrhoids were randomized into: 1) stapled hemorrhoidectomy (PPH group; n = 21), and 2) open hemorrhoidectomy (open group; n = 20). Emergency surgery was performed with perioperative data and complications were recorded. Patients were followed up by independent assessors to evaluate pain, recurrence, continence function, and satisfaction at regular intervals. RESULTS: The median follow-up for the PPH group and open group were 59 and 56 weeks, respectively. There was no significant difference in terms of the hospital stay, complication rate, and continence function; however, the mean pain intensity in the first postoperative week was significantly less in the PPH group (4.1 vs. 5.7, P = 0.02). Patients in the PPH group recovered significantly faster in terms of the time to become analgesic-free (4 vs. 8.5 days, P < 0.01), time to become pain-free (9 vs. 20.5 days, P = 0.01), resumption of work (7 vs. 12.5 days, P = 0.01), and time for complete wound healing (2 vs. 4 weeks, P < 0.01). On long-term follow-up, significantly fewer patients in the PPH group complained of recurrent symptoms (0 vs. 5, P = 0.02). The overall symptom improvement and patients' satisfaction were significantly better in the PPH group (90 vs. 80 percent, P = 0.03 and +3 vs. +2, P < 0.01 respectively). CONCLUSIONS: Stapled hemorrhoidectomy is safe and effective for acute thrombosed hemorrhoids. Similar to elective stapled procedure, emergency stapled excision has greater short-term benefits compared with conventional excision: diminished pain, faster recovery, and earlier return to work. Long-term results and satisfaction were excellent.

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Primary small cell carcinoma of the esophagus (SmCC) is an uncommon aggressive tumor characterized by early systemic dissemination and poor prognosis, regardless of the methods of treatment. The optimal treatment strategy remains uncertain. A retrospective study was conducted to review the results of non-operative treatment for patients with limited and metastatic esophageal SmCC. Between 1993 and 2003, 10 patients were diagnosed to have primary esophageal SmCC in our institution. Six of them had disseminated diseases, whereas the other four had limited disease upon diagnosis. All patients were managed non-operatively by either chemotherapy and/or radiotherapy. The overall median survival was 8 months (range, 2-62 months). The survival was 4-62 months for patients with limited disease, whereas it was 2-10 months for patients with disseminated disease at initial diagnosis. In summary, the current study demonstrated satisfactory palliation could be achieved with chemo-radiation for patients with limited disease; however, the ultimate role of primary chemo-radiation for esophageal SmCC must await results from randomized trials.

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