Primary bilateral low-grade ovarian mucinous carcinoma with omental metastasis: Seidman and Hart–Norris validation

Primary ovarian mucinous carcinoma (OMC) is a rare ovarian epithelial tumours that predominantly affects pre-menopausal women but can occur in the post-menopausal population. The significant intra-tumoural heterogeneity inherent to this neoplasm often complicates the diagnostic process, particularly when distinguishing primary tumours from metastatic ovarian tumours. Although bilaterality is not a common rule for these tumours, its occurrence creates a significant diagnostic dilemma. Furthermore, advanced-stage disease may present with ascites and omental metastasis, further challenging the diagnostic approach. In this report, we present a case of a primary bilateral low-grade OMC with omental metastasis in a 65-year-old post-menopausal female. Diagnostic validation was achieved via a systematic morphological assessment utilising the Seidman algorithm and the Hart and Norris criteria.