title: Superficial ulcerating rheumatoid necrobiosis: a perforating rheumatoid nodule.
abstract: We report a case of superficial ulcerating rheumatoid necrobiosis (SURN), which is a recently described cutaneous manifestation of severe rheumatoid arthritis. As with classic rheumatoid nodule, there is evidence that this lesion may result from a vasculitis. SURN appears to represent a form of "perforating" rheumatoid nodule, and completes a triad of major necrobiotic processes (granuloma annulare, necrobiosis lipoidica, rheumatoid nodule) that have been reported to show epidermal perforation.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000150:complications; D005260:Female; D006099:Granuloma / Q000209:etiology / Q000473:pathology; D006801:Humans; D008875:Middle Aged; D009335:Necrobiosis Lipoidica / Q000209:etiology / Q000473:pathology*; D012215:Rheumatic Nodule / Q000209:etiology; D012218:Rheumatoid Nodule / Q000473:pathology*; D012883:Skin Ulcer / Q000209:etiology / Q000473:pathology*; D014657:Vasculitis / Q000150:complications