Definitions for tuberous sclerosis

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  1. Tuberous sclerosis

    Tuberous sclerosis or tuberous sclerosis complex is a rare multi-system genetic disease that causes non-malignant tumors to grow in the brain and on other vital organs such as the kidneys, heart, eyes, lungs, and skin. A combination of symptoms may include seizures, developmental delay, behavioral problems, skin abnormalities, lung and kidney disease. TSC is caused by a mutation of either of two genes, TSC1 and TSC2, which code for the proteins hamartin and tuberin respectively. These proteins act as tumor growth suppressors, agents that regulate cell proliferation and differentiation. The name, composed of the Latin tuber and the Greek skleros, refers to the pathological finding of thick, firm and pale gyri, called "tubers," in the brains of patients postmortem. These tubers were first described by Désiré-Magloire Bourneville in 1880; the cortical manifestations may sometimes still be known by the eponym Bourneville's disease.

U.S. National Library of Medicine

  1. Tuberous Sclerosis

    An autosomal dominant disorder which is generally classified as a phacomatosis. Pathologically, the condition is characterized by glial cell tumors which arise in the cerebral hemispheres and retina. There is an increased incidence of benign rhabdomyomas of the heart and angiomyolipomas of kidney, liver, lungs, thyroid, and testes. Clinical manifestations include MENTAL RETARDATION; adenoma sebaceum of the face (actually angiofibromas); EPILEPSY; SPASMS, INFANTILE; Shagreen patches on the trunk; and subungual fibromas. (From Adams et al., Principles of Neurology, 6th ed, p1011)

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