RESUMO
Primary segmental omental infarction in adults is very rare and occasionally occurs due to impaired perfusion to the greater omentum. Most authors believe that the condition results from an embryologic variant associated with anomalous and fragile blood supply of the right lower portion of the greater omentum, which is consequently susceptible to infarction. Since there are no characteristic clinical findings, the clinical presentation often mimics acute appendicitis or cholecystitis. However, in the proper clinical setting, the correct diagnosis can be established by the radiologist; therefore, unnecessary surgery can be avoided in many cases. Cross-sectional imaging by ultrasound or computed tomography will demonstrate characteristic findings in a location corresponding to the patient's point of maximal tenderness. These findings consist of an ovoid or cake-like mass in the omental fat with surrounding inflammatory changes. We report a case of primary segmental omental infarction in an adults who was treated conservatively after the diagnosis was established with clinical findings.