• J Miguel Perelló, J L Aguayo Albasini, V Soria Aledo, J Aguilar Jiménez, B Flores Pastor, M F Candel Arenas, and E Girela Baena.
• Médico Interno Residente, Servicio de Cirugía General y Aparato Digestivo, Hospital General Universitario J.M. Morales Meseguer, Murcia, España.
• Gastroent Hepat Barc. 2002 Oct 1;25(8):493-6.

IntroductionSegmentary infarction of the greater omentum produces a clinical profile of acute abdomen. To date, the cause has been discovered during surgery. Greater use of ultrasonography and computed tomography (CT) in the emergency department could lead to preoperative diagnosis. The aim of this study was to describe the advisability of avoiding surgery in selected patients.Patients And MethodA series of nine adult patients (six men and three women), aged between 18 and 50 years, with a final diagnosis of primary omental torsion were reviewed. The first three patients underwent surgery: two underwent laparotomy for suspected acute appendicitis and the third underwent laparoscopy with a diagnosis of non-specific acute abdomen. The six remaining patients, who received a diagnosis of primary omental torsion or infarction based on ultrasonography and CT, underwent conservative treatment. The patients who did not undergo surgery were subsequently evaluated with imaging techniques to confirm resolution.ResultsIn the first three patients, symptoms were resolved by resection of the affected omental section. In the six remaining patients, a 3-6 cm mass of soft tissue in the paraumbilical region, between the rectal sheath and the transverse colon, was found. The lesions were hyperechoic or of mixed attenuation. These findings, together with the absence of other radiological and clinical signs, led to the preoperative diagnosis. Treatment was conservative and a fast recovery, observed both clinically and radiologically, was made.ConclusionsSurgery should be avoided in selected cases of acute abdomen diagnosed as primary omental torsion.

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