Primary Peritoneal Psammocarcinoma Misdiagnosed as an Heterotopic Ossification: A Case Report

In: Journal of the Korean Society of Radiology · 2023 · vol. 84(4) , pp. 958 · doi:10.3348/jksr.2022.0095 · PMID:37559805 · PMC10407059 · W4383738471
article OA: gold CC0

Abstract

Primary peritoneal psammocarcinoma is a rare type of serous carcinoma that is characterized by the massive formation of psammoma bodies and the invasion of adjacent organs. A 55-year-old female who previously underwent a hysterectomy presented to the emergency room with severe abdominal pain. Contrast-enhanced CT revealed an intra-abdominal calcific mass. Initially, it was thought to be a heterotopic ossification due to the previous pelvic surgery with intact ovaries. However, this was diagnosed as a primary peritoneal psammocarcinoma. Primary peritoneal psammocarcinoma is a very rare disease entity that should be considered a differential diagnosis in patients with normal ovaries, massive ossification in the pelvic cavity, and calcific peritoneal nodules.

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