Congenital orbital teratoma: a review and report of two cases.

Congenital orbital teratomas are rare tumors derived from more than one germinal cell layer. These tumors may arise within the orbit, or may originate intracranially and extend into the orbit. Recent advances in ultrasonography have made in utero diagnosis possible. We present the case reports of a primary orbital teratoma and an intracranial teratoma with secondary orbital involvement. The clinical features, histopathologic findings, treatment, and pathogenesis of orbital teratomas are discussed.