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Choroidal osteoma: two cases in Japanese women.

Two cases of choroidal osteoma in otherwise healthy Japanese women are presented; the first case resembled a macular degeneration with subretinal neovascularization, the other, a diffuse amelanotic choroidal melanoma. With advanced ancillary diagnostic methods and changing concepts of prognosis and treatment of choroidal melanoma, a small atypical or doubtful choroidal melanoma should be studied carefully before hasty enucleation.