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Figure 1. Evaluation of a 35-year-old man with recent headache and unsteadiness and a history of blindness of the left eye for two years revealed normal blood pressure and renal function, a hemoglobin concentration of 18.2 g per deciliter, and a hematocrit of 0.59. T2-weighted magnetic resonance imaging (MRI) of the brain showed a cerebellar tumor (arrow in Panel A), which was found at surgery to be a benign hemangioblastoma. After the tumor was removed, his hemoglobin concentration fell to 14.5 g per deciliter. Ocular examination showed retinal hemangioblastomas, which were treated with laser ablation and led to . . . [Full Text of this Article] |