Primary retroperitoneal mucinous cystadenocarcinoma in a male patient: a rare case report

Primary retroperitoneal mucinous cystadenocarcinoma (PRMC) is a very rare tumor. To date, less than 50 cases of PRMC have been described in the English literature. Description of the case: We report a case of PRMC in a male patient who presented with chronic lower back pain for 8 months. Computed tomography (CT) showed a retroperitoneal mass in the right abdominal cavity, measuring approximately 4cm × 3cm. At laparotomy, a predominantly cystic, well-encapsulated mass was observed in the right retroperitoneum. The mass was excised without rupture. The final diagnosis of PRMC was confirmed by pathology.

To our knowledge, this is the 5th published case report of a PRMC in a male patient. No other reported cases of PRMC in Chinese men are available in the literature. A literature review of PRMC in the English language literature is also provided.