Primary Peritoneal Serous Papillary Carcinoma Misdiagnosed as Ovarian Cancer: A Case Report and Literature Review

Serous papillary peritoneal carcinoma (SPPC) is a rare tumor, often mistaken for ovarian cancer due to their clinical and histological similarities. It primarily affects postmenopausal women and presents as peritoneal carcinomatosis without significant ovarian involvement. Preoperative diagnosis is challenging, and histopathological analysis is essential to confirm the diagnosis. We present the case of a 44-year-old woman with chronic pelvic pain. After clinical and radiological examinations, surgical exploration revealed a well-defined mass on the left pelvic wall. Histopathological analysis confirmed a diagnosis of primary peritoneal serous papillary carcinoma. This case highlights the peritoneum as a potential primary site of malignancy, and its management should be similar to ovarian cancer.