title: The butterfly sign: an indicator of fluid within both the greater peritoneal cavity and the lesser omental bursa.
abstract: Fluid accumulations present in the lesser omental bursa and the greater peritoneal cavity simultaneously outline a pattern resembling a butterfly. This "butterfly sign" can contribute to a more accurate diagnosis in evaluation of acute pancreatic processes and, more generally, acute abdominal syndromes.
mesh_terms: D000006:Abdomen, Acute / Q000175:diagnosis*; D000328:Adult; D001202:Ascitic Fluid / Q000032:analysis*; D005260:Female; D006801:Humans; D009852:Omentum / Q000473:pathology*; D010529:Peritoneal Cavity / Q000473:pathology*; D014463:Ultrasonography