Primary ovarian carcinoid tumors are extremely rare, accounting for less than 0.1% of ovarian neoplasms. Due to their rarity, imaging features are not well documented. This case report presents a 52-year-old female patient with incidental detection of a pelvic mass. Pelvic MRI demonstrated a well-circumscribed lesion with heterogeneous signal intensity on T2-weighted images, mild enhancement on post-contrast sequences, and restricted diffusion on DWI. Surgical excision was performed, and histopathology confirmed a primary ovarian carcinoid tumor. Imaging-pathology correlation revealed that areas of hyperintensity on T2 corresponded to myxoid stroma, while areas of restricted diffusion matched densely cellular regions. This case highlights the importance of detailed MRI assessment in identifying uncommon ovarian tumors and guiding appropriate surgical management.

Keywords: Ovarian Carcinoid, MRI, Neoplasm, Imaging-Pathology Correlation