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

BACKGROUND AND AIM: 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.

CONCLUSION: 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.