Current management of choroidal malignant melanoma.

Malignant melanoma is the most frequently encountered primary intraocular neoplasm. Within the eye this tumour arises in the uveal tract where the choroid is affected more often than the iris or ciliary body. The tumour occurs typically in middle life and the aetiology is not known. Uveal tissue is heavily pigmented in all races but ocular melanoma is notably rare in negroes. There is clinical and pathological evidence that malignant change may take place in a choroidal naevus, but melanoma has arisen in eyes documented to have no pre-existing pigmented lesion.