What is tuberous sclerosis?

Tuberous sclerosis or tuberous sclerosis complex (TSC) is a genetic disorder that is characterised by hamartomas in many organs, but particularly the skin, brain, eye, kidney and heart. Hamartomas are non-cancerous malformations composed of an overgrowth of the cells and tissues that normally occur in the affected area and include naevi (birthmarks). Tuberous sclerosis is also known as epiloia.

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