McGill University Health Centre » Melanocytoma

May 18 2020 by McGill University Health Centre

This type of melanocytoma, which tends to undergo spontaneous necrosis, is a variant of melanocytic nevi of the uveal tract. Follow-up is recommended due to the possibility of malignant transformation (melanoma), which occurs in up to 2% of cases. Gross examination reveals a very pigmented, solid, homogeneous tumor located in the ciliary body and choroid. Tumor thickness and pigmentation suggests uveal melanoma on gross examination; however, the heavy pigmentation can indicate melanocytoma. Diagnosis is confirmed by microscopic examination. This image shows a transverse section of an enucleation specimen. A thick melanocytic tumor is present in the uveal tract, at the retina and near the ciliary bodies

Condition/keywords: choroid, enucleation, melanocytoma