PEDIATRIC ORBITAL TUMORS IN TURKEY

A retrospective review of 376 pediatric orbital tumor cases seen at th e Ankara University Eye Clinic between 1963 and 1993 was undertaken. T he diagnosis was made histologically in every case. Secondary tumors a ccounted for 127 cases (33.8%), cystic lesions for 82 cases (21.8%), r habdomyosarcomas for 66 cases (17.6%), neurogenic tumors for 23 cases (6.1%), vascular lesions for 21 cases (5.6%), inflammatory lesions for 21 cases (5.6%), lymphoma and leukemias for 18 cases (4.8%), other me senchymal tumors for 11 cases (2.9%), metastatic tumors for 5 cases (1 .3%), traumatic foreign bodies for 2 cases (0.5%), and lacrimal fossa lesions for 1 case (0.3%). The most common benign orbital tumors were the cystic lesions. The most common primary malignant tumor was rhabdo myosarcoma. Overall, the most frequent orbital lesion was the secondar y orbital invasion of retinoblastoma.