Objective: To evaluate indocyanine green (ICG) angiography in the diagnosis of small choroidal tumours.
Methods: We studied 40 patients with small choroidal tumours, 22 males and 18 females. The tumour thickness on ultrasonography ranged from 2.2 to 4.3 mm.
Results: Nineteen pigmented tumours showed early and late diffuse hypofluorescence, consistent with naevi. Eight non-pigmented tumours showed normal choroidal vessels in calibre, configuration, and branching, typical of non-pigmented naevi. The early frame of ICG angiography showed in 13 cases pathological, intrinsic vascularization, suggestive of melanomas.
Conclusion: This preliminary study suggests that ICG angiography may be helpful in differentiating choroidal naevi from small melanomas.
Copyright 2002 S. Karger AG, Basel