title: An unusual extracolonic manifestation of chronic ulcerative colitis.
mesh_terms: D000293:Adolescent; D002908:Chronic Disease; D003093:Colitis, Ulcerative / Q000150:complications*; D003374:Coumarins / Q000009:adverse effects; D006801:Humans; D008297:Male; D009336:Necrosis; D012877:Skin Manifestations; D013924:Thrombophlebitis / Q000209:etiology*
chemical_list: D003374:Coumarins