A pitfall in the diagnosis of a subphrenic abscess seen on computerized tomography.

Abstract The authors describe a case in which a delayed diagnosis of an absecess in the right upper quadrant (secondary to a ruptured gallbladder) was caused by a mistaken diagnosis of interposition of the colon between the liver and the diaphragm on a computed tomogram scan and the lack of significant clinical symptomatology. This case report is presented hopefully to enable one to suggest an earlier diagnosis of a similar situation and to illustrate additional pathology on computed tomography scans.