Mauricio Sorbello

Spontaneous intramural small bowel hematoma induced by anticoagulant therapy: review and case report

Of particular note among the causes of abdominal pain that necessitate surgery are appendicitis and intestinal obstruction. The most frequent causes of obstruction are adhesions (60%), hernias (15%), neoplasia (6%) and rare causes (6%). 2 In many cases, surgery comes to represent both a diagnostic and therapeutic measure. In some cases, however, we may be confronted by an obstructive condition in which more conservative measures are recommended. The aim of this article is to highlight the rare occurrence of acute abdominal obstruction due to spontaneous intramural small bowel hematoma resulting from the use of oral anticoagulants by reporting on a case attended at the General Surgery Service of the Clinical Surgery Division III of the Hospital das Clinicas - University of Sao Paulo Medical School (HC – FMUSP), as well as presenting a systematic review of the literature from the last 25 years.

Comparison of the pull and introducer percutaneous endoscopic gastrostomy techniques in patients with head and neck cancer

Background and study aims Percutaneous endoscopic gastrostomy (PEG) in head and neck cancer (HNC) patients is associated with higher complication and mortality rates when compared to a general patient population. The pull technique is still the preferred technique worldwide but it has some limitations. The aim of this study is to compare the pull and introducer PEG techniques in patients with HNC. Patients and methods This study is based on a retrospective analysis of a prospectively collected database of 309 patients with HNC who underwent PEG in the Cancer Institute of São Paulo. Results The procedure was performed with the standard endoscope in 205 patients and the introducer technique was used in 137 patients. There was one procedure-related mortality. Age, sex and albumin level were similar in both groups. However in the introducer technique group, patients had a higher tumor stage, a lower Karnofsky status, and presented more frequently with tracheostomy and trismus. Overall, major, minor, immediate and late complications and 30-day mortality rates were similar but the introducer technique group presented more minor bleeding and tube dysfunctions. Conclusion The push and introducer PEG techniques seem to be both safe and effective but present different complication profiles. The choice of PEG technique in patients with HNC should be made individually.

Sa1643 Self-Expanding Metallic Stents for the Treatment of Malignant Colorectal Obstruction Are Effective and Safe

Sa1642 Ascending Colon Exploration by Retroviewing: Technical Feasibility and Diagnosis Performance Alba L. Vargas*, Marco Alburquerque, Montserrat Figa, Ferran GonzaLez-Huix Endoscopy, Clinica Girona, Girona, Spain Introduction: The right colon lesions not visualized during the standard colonoscopy have been associated to interval cancer. The proximal fold side exploration of the ascending colon by retroviewing reduces the likely of losing those lesions. The shorter colonoscope diameter would make easier the cecal retroflexion with lower complication rate. Objective: To determine the technical feasibility of the cecal retroflexion, the diagnosis performance and complication rate of the ascending colon exploration by retroviewing with a shorter colonoscope diameter. Methods: Prospective study. There were included all the consecutive total colonoscopies performed by an expert endoscopist during four months. Technique: 1) Usual exploring of the ascending colon: colonoscope insertion and colonoscope withdrawal in forward view from the cecum until the hepatic flexure, 2) colonoscope reinsertion and cecal retroflexion maneuver, and 3) colonoscope withdrawal in retroviewing until the hepatic flexure. We collected the visualized and resected lesions on conventional and retroviewing colonoscopy. Exclusion criteria: incomplete endoscopies by any cause (obstruction, endoscopic therapy, right colon resection). All procedures were done with a Colonoscope PENTAX-i10L EC34 (Insert O: 11.6, Channel: 3.8, Deflection up/down: 180/180, left/right: 160/160). Results: There were included 323 colonoscopies and were excluded 20 by incomplete examination. The cecal retroflexion was feasible in 76.6% (n Z 232). In these procedures, in the right colon, were detected 42 (29.4%) polyps: 40 Paris Is (32 sessile and 8 subpedunculated) and 2 Ip; in 142 colonoscopies. Histology: 32 adenomas and 10 sessile serrated polyps without dysplasia. 14 polyps (9.8% of the total and 33.3% of the ascending colon) were detected only by withdrawal colonoscopy in retroviewing: sessile polyps Is, between 3-15 mm; 8 were resected in retroflexion. There were not complications. Conclusion: The cecal retroflexion was feasible in over 75% of colonoscopies and were not registered associated complications. Over 30% of the ascending colon polyps were detected only by colonoscope withdrawal in retroviewing. Cecal retroflexion maneuver has the potential to improve colorectal polyps detection.

Endoscopic hemostasis of a bleeding gastric gastrointestinal stromal tumor (GIST) with endoloop placement

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