title: Pathology quiz case 2. Blue nevus (Jadassohn-Tieche).
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D009508:Nevus, Pigmented / Q000175:diagnosis / Q000473:pathology*; D012878:Skin Neoplasms / Q000175:diagnosis / Q000473:pathology*