Metastatic brain tumors from colorectal cancer are relatively rare. In previous reports the incidence ranged from 1.9 to 3.5 percent of all metastatic brain tumors. In another recent article the cumulative incidence of brain metastasis was estimated at 1.2%. The prognosis for patients with even a single resectable brain metastasis is poor. This paper presents the case report of a 72-year-old woman with a solitary brain metastasis 16 years after a diagnosis of colorectal cancer. She remained asymptomatic for 16 years. The first sign of a secondary tumor was diplopia. Brain scan demonstrated a space-occupying lesion in the occipital area. A solitary tumor was removed by craniotomy. Histological examination showed that it was a metastasis from the intestinal primary tumor. The patient subsequently underwent whole brain radiotherapy for a total dose of 30 Gy in 10 fractions.
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