Connective Tissue Nevus

**Semantic type:** Disease or Syndrome

**Definition:** A hamartoma characterized by localized malformation of one or more of the components of the dermis; presenting as clustered, slightly raised, pea-sized lesions distributed over the abdomen, back, buttocks, arms, or thighs. It may be an isolated lesion or a component of one of a number of inherited disorders, such as tuberous sclerosis.

**Synonyms:** - Collagen Hamartoma - Collagen Nevus - Collagenoma