Blue Nevus Of Cervix – A Case Report

Pigmented lesions of the cervix are a rarity. Blue nevus occurs as an incidental finding in cervix in hysterectomy specimens from middle aged women. This condition is more appropriately called ‘Focal Stromal Melanocytosis” as the findings are more analogous to dermal melanocytosis rather than to cutaneous blue nevi. There are only a couple of reports of cervical blue nevi in the Indian literature. We report a case of blue nevus in cervix in a middle aged south Indian woman. The lesion was not evident on clinical or gross examination. Microscopically, dendritic pigmented stromal melanocytes (SM) were seen in the superficial stroma of endocervix. These cells were positive for Masson Fontana and negative for Perl’s stain. S100 was positive on immunochemistry. Differential diagnosis of melanosis, lentigo, simplex and melanoma were considered. It has been suggested that melanoma of cervix arises from these stromal melanocytes (SM) emphasising a close follow-up of such cases.