title: Pathology quiz case 1. Pediatric solitary mastocytoma.
authors.affiliation: Medical College of Wisconsin, Milwaukee, USA.
authors.forename: Brent G
authors.initials: BG
authors.lastname: Nichols
authors.forename: Eyglo O
authors.initials: EO
authors.lastname: Thordardottir
authors.forename: Deborah S F
authors.initials: DS
authors.lastname: Kacmarynski
mesh_terms: D003937:Diagnosis, Differential; D006258:Head and Neck Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D006801:Humans; D007223:Infant; D008297:Male; D054705:Mastocytoma, Skin / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D014463:Ultrasonography