A Case of Orbital Schwannoma(Neurilemoma)

ABSTRACT

Schwannoma(Neurilemoma) is a neoplasm that can occur wherever schwann cells are present, that is, in any myelinated peripheral nerve, brain and sympathetic nerve. Schwannoma tends to occur usually in intraconal area, and it may arise at any point of the orbit, including the lacrimal sac and it may arise at sinus and gasserian ganglion. A 43 years old korean male had painless proptosis, which had developed for 1 month and was dignosed an schwannoma of left orbit. The tumor was excised totally. Histologic examination showed a combination of Antoni type A(dense, cellular) and Antoni type BOoose, edematous or necrotic) patterns.