title: [Erythema nodosum and non-Hodgkin lymphoma].
abstract: A 36-year-old woman presenting with erythematous painful tender inflammatory nodular lesions on both knees, shins and ankles is reported. Erythema nodosum (EN) was diagnosed. Further clinical examination revealed hilar lymphadenopathy. A lymph node was removed for histological examination, and a centroblastic non-Hodgkin lymphoma was diagnosed. Remarkably, in this patient EN occurred before the haematological malignancy was detected.
authors.affiliation: Dermatologische Klinik und Poliklinik, Ludwig-Maximilians-Universität München.
authors.forename: R M
authors.initials: RM
authors.lastname: Szeimies
authors.forename: P
authors.initials: P
authors.lastname: Kaudewitz
authors.forename: O
authors.initials: O
authors.lastname: Braun-Falco
mesh_terms: D000328:Adult; D001706:Biopsy; D001853:Bone Marrow / Q000473:pathology; D003937:Diagnosis, Differential; D004893:Erythema Nodosum / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology; D016393:Lymphoma, B-Cell / Q000175:diagnosis* / Q000473:pathology; D010257:Paraneoplastic Syndromes / Q000175:diagnosis* / Q000473:pathology; D012867:Skin / Q000473:pathology