title: Interstitial granulomatous dermatitis: rare cutaneous manifestation of rheumatoid arthritis.
abstract: Besides being an uncommon clinicopathological entity, interstitial granulomatous dermatitis, also described as interstitial granulomatous dermatitis with arthritis (IGDA), has shown a wide spectrum of clinical manifestations, such as linear and erythematous lesions, papules, plaques and nodules. Histological features include dense dermal histiocytic infiltrate, usually in a palisade configuration, and scattered neutrophils and eosinophils. We describe a middle aged woman with rheumatoid arthritis of difficult management and cutaneous lesions compatible with IGDA.
authors.affiliation: Hospital do Servidor Público Estadual de São Paulo, São Paulo, SP, Brazil.
authors.forename: Isis Suga
authors.initials: IS
authors.lastname: Veronez
authors.affiliation: Hospital do Servidor Público Estadual de São Paulo, São Paulo, SP, Brazil.
authors.forename: Fernando Luiz
authors.initials: FL
authors.lastname: Dantas
authors.affiliation: Hospital do Servidor Público Estadual de São Paulo, São Paulo, SP, Brazil.
authors.forename: Neusa Yuriko
authors.initials: NY
authors.lastname: Valente
authors.affiliation: Hospital do Servidor Público Estadual de São Paulo, São Paulo, SP, Brazil.
authors.forename: Priscila
authors.initials: P
authors.lastname: Kakizaki
authors.affiliation: Hospital do Servidor Público Estadual de São Paulo, São Paulo, SP, Brazil.
authors.forename: Thaís Helena
authors.initials: TH
authors.lastname: Yasuda
authors.affiliation: Hospital do Servidor Público Estadual de São Paulo, São Paulo, SP, Brazil.
authors.forename: Thaís do Amaral
authors.initials: Tdo A
authors.lastname: Cunha
mesh_terms: D001172:Arthritis, Rheumatoid / Q000150:complications*; D001706:Biopsy; D003872:Dermatitis / Q000209:etiology / Q000473:pathology*; D004804:Eosinophils / Q000473:pathology; D005260:Female; D006099:Granuloma / Q000209:etiology / Q000473:pathology*; D006801:Humans; D008875:Middle Aged; D009504:Neutrophils / Q000473:pathology; D012867:Skin / Q000473:pathology