[Malignant transformation of a nevus of ota].

The association of naevus of Ota and choroidal melanoma is reported in a 83 years-old monophtalm caucasian man. Because of no tumoral spreading in this monophtalm patient, the tumor is treated by physical technique with iridium disc. In the next months, complications of this physical treatment appeared. The authors remind the clinical aspect of the disease and the different associations, also that the frequency of coming of the main complication of the affection: the choroidal melanoma.