title: JAAD Grand Rounds quiz: Adult with blue green patch.
authors.affiliation: Washington, District of Columbia.
authors.forename: Amir
authors.initials: A
authors.lastname: Zahir
authors.affiliation: Washington, District of Columbia.
authors.forename: Christina
authors.initials: C
authors.lastname: Ling
authors.affiliation: Washington, District of Columbia.
authors.forename: Sabrina
authors.initials: S
authors.lastname: Newman
mesh_terms: D001741:Black or African American; D001707:Biopsy, Needle; D003937:Diagnosis, Differential; D005500:Follow-Up Studies; D006222:Hamartoma / Q000175:diagnosis / Q000473:pathology* / Q000628:therapy; D006801:Humans; D007150:Immunohistochemistry; D053685:Laser Therapy / Q000379:methods; D008297:Male; D008544:Melanocytes / Q000473:pathology*; D008548:Melanosis / Q000175:diagnosis / Q000473:pathology* / Q000628:therapy; D008875:Middle Aged; D018570:Risk Assessment; D012720:Severity of Illness Index; D056164:Teaching Rounds