Abstract
We describe two cases of metastatic brain stem tumors diagnosed by otorhinolaryngologists. Although metastatic brain stem tumors are rarely encountered in otorhinolaryngology clinics, their possible presence must always be kept in mind. The first patient was a 64-year-old male with left facial palsy. Neurootological examinations revealed bilateral medial longitudinal fasciculus syndrome and left gaze disturbance. Neuroradiological, CT and MRI examinations showed lesions in the brain stem and around a lateral ventricle. These lesions were diagnosed to be metastatic from lung carcinoma. The second patient was a 56-year-old male with bloody otorrhea from chronic external otitis caused by atomic bomb burns. His optokinetic nystagmus response was found to be abnormal, and he also numbness of the right hand and of the skin around the mouth. A brain stem tumor was demonstrated by CT scan. At autopsy, a brain stem tumor was found metastatic from a lung carcinoma which had been resected two years before his death.
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