Amelanotic choroidal nevus and melanoma : Cytology, tumor size, and pigmentation as prognostic indicators

Choroidal nevi are fairly common lesions of the posterior pole that can sometimes transform into melanoma, and it is thought that most choroidal melanomas arise from preexisting nevi. Occasionally, these lesions present as nonpigmented or amelanotic variations of their pigmented counterparts. Recent...

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