melanocytic nevus; pigmented nevus; nevocellular nevus
Medical term for a mole or birthmark caused by melanocytic cells. In everyday language, ほくろ is more common.
See also: ほくろ
I had a melanocytic nevus examined at the dermatology clinic.
Common word for a mole or beauty mark; 色素性母斑 is the formal medical term.
Compound of 色素 (pigment), 性 (nature/characteristic), and 母斑 (nevus/birthmark). A modern medical term.