Abstract
Dorsal midbrain gliomas (DMGs) involving the tectum occur more commonly in children than in adults. These lesions are often indolent in nature, and patients require treatment only for obstructive hydrocephalus. Because limited information is available concerning adults with this type of lesion, we describe our experience and management strategy in adults with DMGs. We retrospectively reviewed the charts and magnetic resonance imaging scans of five adult patients (four men, one woman; mean age, 51.6 yr; range, 23-69 yr) who were treated from March 1992 to August 2001 for DMGs involving the tectum. The mean follow-up time for these patients was 71.4 months (range, 25-113 mo). We analyzed the data to determine the optimal treatment strategy and outcomes of patients with DMGs. Tumor volume was analyzed objectively with Scion Image software (Scion Corp., Frederick, MD) to document changes in volume and determine whether treatment strategy differed significantly with tumor size. Tumors in two of these patients were found incidentally, and three others presented with obstructive hydrocephalus. Magnetic resonance imaging scans demonstrated an isolated tectal glioma in one patient, tectal and tegmental (periaqueductal) gliomas in three ...Continue Reading
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