Dr. Finger on: How to Differentiate a Suspicious Choroidal Nevus from a Small Choroidal Melanoma

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March 17, 2021: Few eye cancer specialists find it difficult to diagnose medium or large choroidal melanomas. Once they get that large, they typically display unique diagnostic characteristics. In fact, the COMS-study found trained eye cancer specialists had a diagnostic accuracy of more than 99%. However, it is those small tumors that can be difficult. Dr. Finger suggests a simple method to different MOST suspicious choroidal nevi from small choroidal melanomas. Dr. Finger created the mnemonic MOST, where Melanoma = Orange pigment discoloration, Subretinal fluid exudation and a tumor Thickness of 2 or more millimeters (measured by ultrasound imaging). His is an easy to use method to differentiate MOST choroidal nevi from a choroidal melanomas.

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