Orbital rhabdomyosarcoma in an adult.

INTRODUCTION Rhabdomyosarcoma is the most common primary orbital malignant tumor in children. Orbital lesions represent about 10 % of all the cases of rhabdomyosarcoma. Rhabdomyosarcoma is a rare cause of proptosis in adults. OBJECTIVE To report a case of primary orbital rhabdomyosarcoma in a 45-year-old female. DESIGN Interventional case report. The main outcome measures are a rare cause ofproptosis in an adult, discussion on treatment options and prognosis ofrhabdomyosarcoma. RESULT The patient underwent total orbital exenteration and was referred for radiotherapy and chemotherapy. CONCLUSION Rhabdomyosarcoma is a rare cause of proptosis in adults. It should be suspected in a case of rapidly-progressive proptosis in adults.