[Incidence of tumors and tumor-like lesions in the conjunctiva and the cornea].

Incidence of tumors and tumor-like lesions in conjunctiva and cornea seen at Juntendo University during the 13-year period from 1980 to 1992 was analysed histopathologically. There were 126 cases including 116 benign (92.1%) and 10 malignant lesions (7.9%). Pigmented nevi (32 cases) were most frequently found, accounting for 27.6% of the benign tumors and tumor-like lesions, half of which were compound nevi (16 cases). Nevi were closely followed by cysts (24 cases, 20.7%) and dermoids (15 cases, 12.9%). Carcinoma in situ (3 cases) was most frequently found, accounting for 30% of the malignant tumors (10 cases), closely followed by malignant lymphoma (2 cases), squamous cell carcinoma (2 cases), mucinous carcinoma (1 case), sebaceous gland carcinoma (1 case) and metastatic tumor (1 case). The ratio of males to females was 4:6. Age distribution of the patients was 47-92 years.