Controversy surrounds appendectomy timings and their effects on postoperative outcomes. This study evaluated the influence of hospital delays on perforation rates and complications in patients with acute appendicitis. From January 2008 to December 2013, the cases of 4148 consecutive patients who had undergone appendectomies for suspected appendicitis were reviewed. The patients’ demographic data, times from symptom onset to hospital arrival (prehospital delay), times from hospital arrival to surgery (hospital delay), histological findings, and postoperative outcomes were documented. Perforation rates and complications were assessed at each time interval between symptom onset and surgery. Perforation rates and complications increased with longer prehospital delays, but no correlations were evident between hospital delays and perforation rates or between hospital delays and complications. Although delaying appendectomies for >18 hours had no statistically significant impact on perforation rates (25.3 vs 19.4%, P = 0.133), it caused more complications (8.7 vs 3.8%, P = 0.023) compared with cases delayed for 12 to 18 hours. Multivariate analyses determined that hospital delays were not associated with increased risks of perforation, complications, wound infections, or intra-abdominal abscesses. However, a >18-hour hospital delay was associated with a significantly increased risk of postoperative ileus (odds ratio = 2.94, 95% confidence interval = 1.17–7.41, P = 0.022). Hospital delays were not associated with significantly increased risks of perforation and complications. However, patients with perforated appendicitis had higher risks of developing postoperative ileus if hospital delays were >18 hours. Therefore, hospital delays of ≤18 hours are safe, but caution is required if delays are >18 hours.

Inferior mesenteric arteriovenous fistula is rare and may be congenital or acquired. Affected patients present with abdominal pain, mass, or manifestations of portal hypertension and bowel ischemia. Until now, inferior mesenteric arteriovenous fistula due to trauma has not been reported. Herein, we report a case of a 53-year-old woman who had inferior mesenteric arteriovenous fistula considered to have originated from remote blunt trauma that was successfully treated by surgical resection of only the arteriovenous fistula without colectomy. To our knowledge, this is the first case of traumatic inferior mesenteric arteriovenous fistula. (

Overweight, elevated C-reactive protein, symptom duration of more than 3 days, appendiceal diameter of more than 10 mm, and abscess were independent predictive factors of prolonged operative time. Furthermore, prolonged operative time was associated with adverse postoperative outcomes after laparoscopic appendectomy.

Liposarcoma is one of the most common soft tissue sarcomas that occurs in adults and is currently divided into five main subgroups: well-differentiated, myxoid, round cell, pleomorphic, and dedifferentiated. Primary mesenteric liposarcoma is extremely rare, and the treatment strategy is surgical resection with a wide free margin, often followed by radiation and adjuvant chemotherapy if distant metastasis is not detected. A 73-year-old male patient presented with lower abdominal distension. Abdominal CT scan revealed a large homogeneously enhancing mass lesion abutting the sigmoid colon and urinary bladder. At laparotomy, the solid mass measured 28×26×12 cm in size, was well-demarcated, and originated from the mesentery of the middle ileum. It was removed along with some small intestine (ileocecal valve upper 50-150 cm) and ileal mesentery because of adhesion. Histologically, the tumor proved to be pleomorphic liposarcoma. The patient did not undergo any adjuvant treatment following surgery, but he remains disease free until 33 months after surgery. Herein, we report a case of pleomorphic liposarcoma arising from small bowel mesentery.

Background/Aims: Intraoperative cholangiogram (IOC) during laparoscopic cholecystectomy (LC) has been used to evaluate bile duct stone. But, the routine use of IOC remains controversial. With routine IOC during LC, we reviewed the variation of hepatic duct confluence and try to suggest the diagnostic criteria of asymptomatic common bile duct (CBD) stone. Methods: We reviewed the medical record of 970 consecutive patients who underwent LC with IOC from January 1999 to December 2009, retrospectively. Results: Nine hundered seventy patients were enrolled. IOC were successful in 957 (98.7%) and unsuccessful in 13 (1.3%). Eighty two of 957 patients (8.2%) were excluded because of no or poor radiologic image. According to Couinaud's classification, 492 patients (56.2%) had type A hepatic duct confluence, 227 patients (26.1%) type B, 15 patients (17%) type C1, 43 patients (4.9%) type C2, 72 patients (8.2%) type D1, 21 patients (2.4%) type D2, 1 patient (0.1%) type E1, 1 patient (0.1%) type E2, 2 patients (0.2%) type F, and 1 patient (0.1%) no classified type. The CBD stone was found in 116 of 970 (12.2%) patients. In 281 patients, preoperative serologic and radiologic tests did not show abnormality. When preoperative findings were not remarkable, there was no difference of clinical features between patients with or without CBD stones. Conclusions: Although IOC during LC has some demerits, it is a safe and accurate method for the detection of CBD stone and the anatomic variation of intrahepatic duct. (Korean J Gastroenterol 2011;58:338-345)