Conjunctival Melanocytic Intraepithelial Lesion

**Semantic type:** Neoplastic Process

**Definition:** A spectrum of neoplastic changes that occur in the conjunctiva and range from melanocytic hyperplasia through degrees of atypia to melanoma in situ. The lesions are generally unilateral but often multifocal and appear as flat, irregular brown discolorations of the conjunctiva. They usually affect middle-aged and elderly Caucasians. (WHO 2018)

**Synonyms:** - C-MIL - C-MIN - Conjunctival Melanocytic Intraepithelial Neoplasia - Conjunctival Primary Acquired Melanosis with Atypia - PAM with Atypia - Primary Acquired Melanosis with Atypia