Journal of Medical Cases, ISSN 1923-4155 print, 1923-4163 online, Open Access
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Case Report

Volume 4, Number 7, July 2013, pages 499-503

Primary Lesser Omentum Torsion - An Extremely Rare Cause of Acute Abdomen and a Very Uncommon Subtype of Intraperitoneal Focal Fat Infarction (IFFI): Case Report and Review of the Literature


Figure 1.
Figure 1. The abdominal U/S was evaluated as uncontributive, however a well circumscribed moderately hyperechoic formation in the anatomic location of the lesser omentum can be noticed (arrows).
Figure 2.
Figure 2. a) A well circumscribed fatty inflammatory mass can be recognised (arrow); b) Hyperechoic streaks within the mass (arrow); c) The formation lying between the posterior edge of the left hepatic lobe and the prepyloric part of the stomach (arrow); d) The formation lying on the gastric antrum (arrow).
Figure 3.
Figure 3. A free part of the lesser omentum and its pedicle originating from the lesser curvature of the stomach is depicted twisted clockwise at 720o, with gangrene of the part lying distally to the level of the torsion. The horizontal axis of the torsion can be clearly seen. The diffuse ischaemic and necrotic parts of the affected lesser omentum are well recognised.