Orbital retinoblastoma: case report.

We describe the case of a 9-month old boy with unilateral retinoblastoma and bulftalmo. Primary enucleation was the treatment of choice due to the lack of visual prognosis. The histology of the enucleated eye showed massive choroidal invasion by the tumor and the optic nerve free of neoplastic tissue. Therefore, no adjuvant chemotherapy or radiotherapy was indicated. Three months after the enucleation, the patient returned with massive orbital retinoblastoma with exposure of the conjunctiva. Treated with chemotherapy, the patient has been in remission for 12 months. The risk factors for orbital recurrence are discussed.