Secondary retinal detachment interpreted as a part of uveal melanoma by CT‐scan

Abstract  Four patients with histologically verified uveal melanomas were examined with computed tomography (CT) scan. Ophthalmoscopy revealed a sharply deliminated tumour surrounded by a secondary retinal detachment. The clinically calculated size of the tumours corresponded well with the histological specimens. The CT‐scan indicated a greater size of the tumours. The discrepancies were due to difficulties in differentiation between the tumour tissue and the subretinal fluid which have almost identical CT‐numbers. By combining axial and coronal views it was possible to distinguish the tumour from the secondary retinal detachment.