Ning Luo
Background: Primary peritoneal carcinoma is epithelial tumor. Histologically, the most common type is primary peritoneal serous carcinoma, which almost occurs in women. Another rare subtype is Primary Peritoneal Mucinous Adenocarcinoma (PPMA). To date, only few cases of PPMA occurring in male patient have been published in English literature. Here we described another rare case of primary peritoneal mucinous adenocarcinoma in a male patient.
Case presentation: We report an 82 years old male patient with the chief complaint of abdominal pain for more than a month without associated symptoms of nausea, vomiting, ascites, and weight loss. Peritoneal cytology and immunohistochemistry reported peritoneal carcinoma of intestinal origin. The patient underwent laparotomy and a primary peritoneal tumor with metastasis to the right colon and mesentery was found. Postoperative histopathology showed the primary peritoneal mucinous adenocarcinoma.
Conclusion: Primary peritoneal mucinous adenocarcinoma is an extremely rare malignancy and has a very poor prognosis. Its delayed diagnosis and management can warrant to complications such as bowel obstruction.