Lentigo Maligna

**Semantic type:** Neoplastic Process

**Definition:** A proliferation of atypical melanocytes in the dermal-epidermal junction, without infiltration of the papillary or reticular dermis. The melanocytic proliferation is associated with actinic damage and epidermal atrophy. It usually occurs in the sun-exposed skin of elderly people. It is a form of melanoma in situ.

**Synonyms:** - Cutaneous Melanoma In Situ - Hutchinson Melanotic Freckle - Hutchinson melanotic freckle, NOS - Hutchinson's Melanotic Freckle - LMM In Situ - Lentigo Maligna Melanoma In Situ - Lentigo maligna