Cavernous angioma is encountered most frequently in正 ntraorbital tumors , It is important to know the detailed anatomy of the orblt in order to approach such a mass lesion , so we studied the microsurgical anatomy of the orbit using cadaver heads. In 3 clinical cases reported here , the mass was all located within the muscle cone , ln which the optic nerve was dispiaced medially and superiorly in 2 cases and was displaced laterally and superiorly in l case . The tumor was approached through fronto − orbital craniotonly with additional orbitotomy and was removed en bloc using a coagulation technique by a lateral route in 2 cases and by a medial route in l case . Postoperatively proptosis , diplopia and anisocoria were observed ;however, these cleared up except for mild anisocoria within a few months .
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