title: Actinic Granuloma Annulare With Scarring and Open Comedones.
abstract: Actinic granuloma and annular elastolytic giant cell granuloma are variants of granuloma annulare affecting, respectively, sun-exposed and sun-covered skin sites on where, besides classical findings, abundant elastophagocytosis is observed. Here, we report a case of exuberant actinic granuloma annulare that, in addition to extensive scarring, showed multiple overlying open comedones. Markedly dilated follicular infundibula filled with compact masses of laminated keratinous material were observed in proximity to dermal inflammation composed of many histiocytes and multinucleated giant cells in close association with degenerated elastic fibers and abundant elastophagocytosis.
authors.affiliation: *Department of Dermatology, Medical School, University of São Paulo, São Paulo, Brazil; and †Department of Pathology, Hospital Obrero, La Paz, Bolivia.
authors.forename: Cfb
authors.initials: C
authors.lastname: Gavioli
authors.forename: Nys
authors.initials: N
authors.lastname: Valente
authors.forename: M
authors.initials: M
authors.lastname: Sangueza
authors.forename: M M
authors.initials: MM
authors.lastname: Nico
mesh_terms: D002921:Cicatrix / Q000473:pathology*; D016460:Granuloma Annulare / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010787:Photosensitivity Disorders / Q000473:pathology