The purpose of this study is to elucidate the incidence of specific orbital tumors obtained from a referral center at Iran

A retrospective chart review of for 1427 consecutive patients referred for a suspected orbital mass over a 13-year period was performed.

Totally 1427 cases with mean age 33 years old (Range:1-90 years) and Female/ male 51.6%/ 48.4%, benign/ malignant 63.5%/ 36.5% were included. Distribution of tumors was as follows: lacrimal tumors: 14.9%, cystic lesions: 21.4%, vasculogenic lesions: 10.7%, inflammatory disorders: 6%, lymphoid tumors: 5.3%, secondary tumors: 21.2%, neurogenic: 5.7%, misseleneous: 14.7%. bilateral involvement: 1.1% and remaining cases had equal distribution between right and left. The most common tumors in each group were as follows: Lacrimal: Chronic dacryoadenitis, adenoid cystic carcinoma, lymphoid lesions; neurogenic: schowanoma, meningioma; Cystic: dermoid cyst, mucocele; Secondry lesions: Retinoblastoma from globe, melanoma, squamous cell carcinla from conjunctiva and eyelids, basal cell carcinoma; Vasculogenic: cavernous hemangioma, capillary hemangioma; misseleneous: rabdomyosarcoma, round cell tumor. Other rare tumors were as follows: pheochromocytoma, sarcoidosis, tuberculosis, vegner granulomatosis, yolk sac tumor.

Most of the tumors were within the first decade. However with aging and after the fifth decade malignant lymphoid tumors increase.