Giant mucinous ovarian cystadenoma mimicking malignancy: a case report and review of diagnostic challenges.

Benign giant ovarian masses have become less common due to advances in diagnostic and imaging techniques. These tumors require careful diagnosis and surgical management due to their considerable size, despite their benign character. Radiological examinations provide important data regarding lesion size and morphology; however, definitive distinction among neoplasm types is generally achieved only through histopathological evaluation following surgical excision. Therefore, meticulous surgical planning and thorough pathological analysis are essential, especially when managing large adnexal masses. This case report presents a giant adnexal mass originating from the left ovary that underwent surgery and was histopathologically consistent with an ovarian mucinous cystadenoma, along with a review of the current literature.