No stone left unturned: a case of malignant mimicry

Abstract

A 67-year-old woman was referred to a peritoneal malignancy centre with suspicion of peritoneal carcinomatosis from unknown primary. She reported a two-year history of intermittent rectal bleeding and mild upper abdominal pain. Her past history included a myocardial infarction, hysterectomy and laparoscopic cholecystectomy 25 years prior. Histopathology and operation reports from her previous surgeries were unavailable. Computed tomography (CT) of the abdomen and pelvis demonstrated multiple calcified nodules in the perihepatic, omental and right paracolic regions, suggestive of peritoneal carcinomatosis (Fig. 1). Physical examination revealed a soft, non-tender abdomen with no palpable masses, and an unremarkable digital rectal examination.