Case Report: Primary ovarian pulmonary-type small cell neuroendocrine carcinoma mimicking benign adnexal torsion: a diagnostic challenge

Background

Small cell carcinoma of the ovary, pulmonary type (SCCOPT), is a rare and aggressive ovarian neuroendocrine carcinoma. Because its clinical and radiological features overlap with benign adnexal conditions and metastatic neuroendocrine tumors, preoperative diagnosis remains challenging. Here, we report a rare case of SCCOPT presenting as acute abdomen associated with adnexal torsion, tumor rupture, and hemoperitoneum, which complicated recognition of the underlying malignancy.