Two Cases of Conjunctival Cyst.

Discussion The name tricho-epithelioma indicates that in this tumour differential diagnosis is directed towards the hair structures. Reese (1951) states that these tumoursmay be single or multiple, are noticed in early life, and grow very slowly, and that there may be some keratinization as in our first case. In our three cases the tumours appeared for the first time when the patients were aged 39, 37, and 22 respectively, the first two being unusually late. Keyes and Queen (1945) reported a case involving the lid margin with many abnormal fine blond hairs protruding from the surface. No such feature was present in our cases. We feel that the tendency for slow growth of the tumour indicates a possible local change towards malignancy. This tendency has been observed by Duke-Elder (1952), but Reese (1951) views this tumour as a type of basal cell epithelioma.