[Choroidal melanoma complicated with central retinal vein occlusion]

Various complications for choroidal melanoma have been reported. However, there are no reports on choroidal melanoma complicated with central retinal vein occlusion.

A 37-year-old male showed an elevated yellowish white tumor of about 8 discs in diameter, and involving the optic disc in the left eye. Serous retinal detachment and subretinal exudate were noted around the tumor. Central retinal vein occlusion occurred concurrently. Fluorescein angiography revealed blocks due to hemorrhage and fluorescence leakage from the retinal vein. Dilation of retinal capillary vessels and marked leakage of fluorescence from the retinal vein and capillary vessels were found in the tumorous region. In the late stage, the entire tumor presented hyper-fluorescence. On indocyanine green angiography, the tumor on the whole presented hypo-fluorescence from the early to late stage, and an insular hyper-fluorescence suggestive of the presence of intratumor vessels with leakage of fluorescence was seen inside. Ultrasonography revealed choroidal excavation. General examination showed no abnormality. On the basis of these findings the patient was diagnosed with choroidal melanoma.

We report a case of choroidal melanoma, which was complicated with central retinal vein occlusion by mechanical compression and invasion of the optic disc from the first medical examination.