MDCT findings in primary amyloidosis of the greater omentum and mesentery: a case report

Imaging findings of amyloid infiltration of the greater omentum, mesentery, and retroperitoneal spaces have only extremely rarely been reported in the radiological literature. This report illustrates the MDCT findings fortuitously found in a 70-year-old male presenting with a known latent myeloma. Extra abdominal deposits—axilla and cardiophrenic angles—were first fortuitously found during thoracic MDCT. Secondary abdominal MDCT revealed the extensive abdominal spread that consisted of very diffuse but asymptomatic pseudo carcinomatous hazy omental, mesenteric and—in a minder proportion—retroperitoneal deposits; these remained isolated without calcification, lymphadenopathy, ascites, or any sign of associated bowel wall thickening. A specific definite histologic diagnosis was made without laparotomy through a biopsy in the right axilla.