Granular Cell Myoblastoma of the Orbit: A Case Report

ABSTRACT

Granular cell myoblastoma is a relatively uncommon lesion of debatable history appearing as a small, solitary but occasionally multiple neoplasm and usually benign course. Most granular cell myoblastoma have been observed tongue, skin and subcutaneous tissue and in the breast but only rarely in the orbit and we know of only 12 well-documented orbital myoblastoma at present. We have recently seen a orbital granuloma cell myoblastoma occurring in a 39 year-old woman, the tumor was firmly attached to the muscle cone and caused exophthalmos with exodeviation of the left eye and was totally removed from the transcranial-orbital unroofing procedure.