Intraperitoneal fat focal infarction of the lesser omentum: case report.

Intraperitoneal fat focal infarction (IFFI) represents a relatively rare acute abdominal condition essentially characterized by infarction and/or torsion of the greater omentum or an epiploic appendage. The spontaneous clinical evolution is favorable under medical treatment, and the imaging findings have been proved sufficiently typical to avoid unnecessary surgery in the great majority of cases. To our knowledge, we report the first case of IFFI of the lesser omentum. Despite the absence of definitive histologic proof, the diagnosis was possible through typical imaging findings extremely similar to those of more classic cases of IFFI but also through the spontaneous benign evolution.