Melanocytoma of the Ciliary Body and Choroid

• By McGill University Health Centre
  The MUHC-McGill University
  Co-author(s): Sabrina Bergeron, P. Zoroquiain, E. Esposito, S. Corredor Casas, P. Logan, A. N. Odashiro, Miguel N. Burnier, Paulina García de Alba Graue, McGill University Health Center-McGill University Ocular Pathology & Translational Research Laboratory
• Uploaded on May 18, 2020.
• Last modified by Caroline Bozell on May 19, 2020.

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Appears in

Melanocytoma

Condition/keywords

melanocytoma, choroid, enucleation

Description

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

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