title: Granulomatous mastitis--a rare cause of erythema nodosum.
abstract: Granulomatous mastitis is a recently described, rare condition of unknown aetiology. It occurs in young, parous women as a tender extra-areolar breast lump and therefore needs to be differentiated from carcinoma. Histologically, a discrete granulomatous lobulitis is seen and because of morphological similarities to granulomatous thyroiditis it has been suggested it may be immunologically mediated. We present a patient in whom granulomatous mastitis presented with periarthritis and erythema nodosum, an association not previously described.
authors: Department of Medicine, Queen Elizabeth Hospital, Edgbaston, Birmingham, UK.
authors: D H
authors: DH
authors: Adams
authors: S G
authors: SG
authors: Hubscher
authors: D G
authors: DG
authors: Scott
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D004893:Erythema Nodosum / Q000209:etiology*; D005260:Female; D006099:Granuloma / Q000150:complications* / Q000473:pathology; D006801:Humans; D008413:Mastitis / Q000150:complications* / Q000473:pathology; D010489:Periarthritis / Q000150:complications; D011247:Pregnancy