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Malignant meningioma in Gorlin's syndrome: cytogenetic and p53 gene analysis. Case report.

Gorlin's syndrome, also known as multiple basal cell carcinoma syndrome, is a familial tumor condition with autosomal-dominant inheritance. Patients develop multiple basal cell carcinomas beginning in childhood. They also have a typical dysmorphic facies, skeletal malformations, and a particular type of epithelial cyst of the jaws. Recent evidence localizes a Gorlin's syndrome locus on chromosome 9 at band q31. Both tumors and malformations of the central nervous system occur with Gorlin's syndrome. Medulloblastoma is the primary brain tumor most frequently associated with this syndrome; over 40 such cases have been reported. However, only seven cases of meningioma associated with Gorlin's syndrome have been described. The authors report the case of a woman with Gorlin's syndrome whose mother and maternal grandfather also had the condition. The patient was found to have a medulloblastoma at 4 years of age and presented with a large bifrontal meningioma at 19 years of age. The meningioma was histologically malignant and had a complex karyotype with multiple translocations including a t(5;9) with the breakpoint on chromosome 9 located at 9q32. The constitutional karyotype of the mother was normal. No mutations of exons 5 to 9 of the p53 gene were detected using single-stranded conformational polymorphism analysis.

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