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We report two cases of rectal malignant melanomas. The patients were an 84-year-old male and a 66-year-old female who had blood in their stools. They were preoperatively diagnosed with poorly differentiated adenocarcinoma of the rectum. The clinical diagnosis for each was rectal carcinoma at stage IIIc according to the tumor-node-metastasis classification(More)
An 81-year-old man with central nervous system (CNS) lymphoma presenting with acute, progressive ataxic hemiparesis. Computed tomography and magnetic resonance imaging localized the lesion extending from the right internal capsule to the ventrolateral aspect of rostral midbrain tegmentum. A stereotactical biopsy yielded a microscopic diagnosis of(More)
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