[Tuberous sclerosis in childhood].

Tuberous sclerosis is an autosomal dominant disease that results from mutations in one of two tumor suppressor genes, TSC1 and TSC2. We are reporting a two-year-old girl who presented with hypopigmented macules (ash leaf) in the skin and small erythematous facial papules (angiofibromas). Her mother was known to have tuberous sclerosis that was diagnosed at age seven.