title: Photo quiz. Case 6. A giant comedone.
authors.affiliation: Leicester Royal Infirmary.
authors.forename: Nigel
authors.initials: N
authors.lastname: Stollery
mesh_terms: D000152:Acne Vulgaris / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008875:Middle Aged; D009508:Nevus, Pigmented / Q000175:diagnosis*