Methods: Two hundred and thirty-three cases (male 138/female 95,

Methods: Two hundred and thirty-three cases (male 138/female 95, median age 69 years, range 33–87 years) were click here enrolled which underwent ESD between January 2007 and December 2012 in our hospital. Results: Perforation occurred in 16 cases (7.2%). There was no significant difference in size of the lesions which were divided based on median size of the lesions, 22 mm. There was no significant difference in perforation rate in each year. There was no significant difference in

perforation rate between doctors, locations of the lesions, previous biopsy cases and between schistosomal and non-schistosomal cases. There was a significant difference in perforation rate in histology (p < 0.001). Carcinoma with submucosal invasion more than 1000 μm had higher perforation rate (5/14, 35%) significantly (p < 0.001). Conclusion: Histology of the lesions was a significant factor which related to perforation. To avoid procedure-related perforations, Protease Inhibitor Library high throughput preoperative diagnosis of the depth of the lesion is an important factor. Key Word(s): 1. ESD; 2. Colon; 3. Perforation; 4. Risk Factor; Presenting Author: NUNO NUNES Additional Authors: VERAC SANTOS, FILIPAC AVILA, MARIAA DUARTE

Corresponding Author: NUNO NUNES Affiliations: HDES Objective: Endoscopic retrograde cholangiopancreatography (ERCP) is a first line therapeutic method in obstructive biliary pathologies. Rarely, this procedure fails to obtain access and/or drainage of biliary tree. Until

recently, such patients could be managed only via a percutaneous this website or surgical approach. An emerging alternative is endoscopic ultrasound (EUS) assisted biliary access and drainage, namely rendezvous procedure. However, this technique is unsuccessful in 25% of patients. Our aim is to demonstrate a new EUS-guided ERCP technique for accessing biliary tree in a patient in whom isolated ERCP approach has failed. Methods: Use of pre-cut needle with endoscopic ultrasound for direct puncture of biliary tree. Results: We present a case of a 63 old man with the diagnosis of a pancreatic head tumor, stage IIA (according to American Journal Committee of Cancer, seventh edition), with a scheduled surgery, when he develops an acute cholangitis. This patient has been submitted to an antrectomy and gastrojejunostomy with Billroth II reconstruction 20 years ago due to a pyloric stenosis. On the blood tests he had an elevated inflammatory parameters (17000 leucocytes/mm3, 93% neutrophils, C reactive protein 9,5 mg/dl) and cholestasis (alkaline phosphatase 472 U/L, gama-glutamyltransferase 1192 U/L, alanine aminotransferase 222 U/L, aspartate aminotransferase 105 U/L, total bilirubin 9,4 mg/dl and direct bilirubin 7,9 mg/dl). The imaging tests revealed a dilated common bile duct (CBD), with 13 mm of diameter.

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