Recurrent mixed tumor of the right lacrimal gland causes acute contralateral visual loss

A 23-year-old woman underwent excisional biopsy of a right palpebral mass: the histopathologic study showed a benign mixed tumor of the lacrimal gland. Thereafter, the tumor recurred repeatedly, and multiple excisions were done. Subsequently, right orbital exenteration was performed, and some orbital and frontal bones were removed. When the patient was 52 years old, the orbital tumor recurred. A histopathologic study revealed malignant transformation. At the age of 54 years, the patient suffered acute loss of vision in her left eye. Computed tomography disclosed invasion of the tumor into the posterior paranasal sinuses and brain.