title: Pyoderma gangrenosum and leucocytoclastic vasculitis in association with rheumatoid arthritis--a report of two cases.
mesh_terms: D000368:Aged; D001172:Arthritis, Rheumatoid / Q000150:complications*; D005260:Female; D005734:Gangrene; D006801:Humans; D008875:Middle Aged; D011711:Pyoderma / Q000150:complications* / Q000473:pathology; D014657:Vasculitis / Q000150:complications* / Q000473:pathology