minimal deviation melanoma

min·i·mal de·vi·a·tion mel·a·no·ma

a malignant melanoma showing less cytologic atypia than is usual in melanoma cells that nevertheless demonstrate asymmetric expansile invasion of the dermis, or metastasis.

minimal deviation melanoma

An uncommon, poorly characterised naevomelanocytic tumour belonging to a continuum of melanomas—from benign atypical naevi to frank melanomas—with a behaviour in the middle. Most cases occur in those under age 30.