INTERNAL STRABISMUS SECONDARY TO INTRACRANIAL EXTENSION OF CANCER OF THE NASOPHARYNX CURED WITH RADIATION THERAPY

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Abstract
The histories of 3 patients with internal strabismus secondary to a radiosensitive type of nasopharyngeal carcinoma with intracranial extension who are well with straightened eyes and no evidence of the disease at the end of 9 1/2, 25 and 29 years after radiation therapy are reported. Nasopharyngeal cancer seems to appear more frequently in Southern China, Hong Kong and Taiwan than in other parts of the world, but no long time cures have been reported in these areas. Two similar good results have been discovered in Brazil, 1 in New York and 1 in Toronto. Evidence is presented indicating that the old time-tried orthovoltage roentgen ray techniques have produced good results, without incurring the risk of serious sequelae in the brain stem and spinal cord following the more intensive irradiation of the deep structures with supervoltage roentgen ray machines and the cobalt 60 teletherapy units.

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