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  • Title: Unusual radiological presentation of tuberous sclerosis complex with leptomeningeal angiomatosis associated with a hypomorphic mutation in the TSC2 gene.
    Author: Ramantani G, Niggemann P, Hahn G, Näke A, Fahsold R, Lee-Kirsch MA.
    Journal: J Child Neurol; 2009 Mar; 24(3):333-7. PubMed ID: 19258292.
    Abstract:
    Tuberous sclerosis complex is an autosomal dominant disorder affecting primarily the central nervous system, skin, and kidney caused by mutations in the TSC1 and TSC2 genes. Diagnosis is established with the identification of various neurocutaneous symptoms and multiple organ system hamartomas. The authors report on a 9-year-old patient with episodes of vertigo and headache followed by full spontaneous recovery. There was no history of seizures, mental retardation, or other neurologic sequelae, and psychomotor development was normal. Magnetic resonance imaging revealed pial angiomatosis of the left cerebellum and calcifications in the left parieto-occipital lobe consistent with the diagnosis of Sturge-Weber syndrome. At the age of 13, multiple renal angiomyolipomas and a single hypomelanotic macule were found, and subsequent imaging revealed several cortical tuberi. The diagnosis was confirmed by sequence analysis, which identified a novel missense mutation p.Ala460Thr in exon 13 of the TSC2 gene. Thus, mild tuberous sclerosis due to a hypomorphic mutation in TSC2 may present with isolated leptomeningeal angiomatosis.
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