Choroid melanoma, developed from nevus

It is known that 25% of choroidal nevus are suspicious, and the risk of their malignanisation is 2-13% with a tendency to increase during follow-up me elongation. It is known that 5.8% undergoes malignancy within 5 years, and 13.9% of suspicious choroidal nevi undergoes malignancy within 10 years. In the article, a clinical case of choroidal melanoma development 5.5 years after the detection of suspicious nevus in a patient who refused to follow up is described. In the presented case, there was a combination of two risk factors of nevus malignisation, which significantly increases the likelihood of such an outcome. Long-term follow-up of patients is required from the first day of diagnosis “nevus of the choroid with signs of progression”.