title: Rectal ulcer associated with levamisole.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000188:drug therapy; D006801:Humans; D007978:Levamisole / Q000009:adverse effects* / Q000627:therapeutic use; D008297:Male; D008875:Middle Aged; D012002:Rectal Diseases / Q000139:chemically induced*; D014456:Ulcer / Q000139:chemically induced
chemical_list: D007978:Levamisole