Abstract
Frequency that complication of the stomatitis and the oral mucosal ulcer associated with the chemotherapy of leukemia is high. We report a severe case of multiple oral mucosal ulcers with the infection of Pseudomonas aeruginosa induced by chemotherapy of acute Leukemia. The patient was a 35-year-old woman, and multiple ulcers by which surface show light green were admitted on 12 days after beginning of the chemotherapy. A mechanical removal of the ulcer surface bacillus adhesion thing was effective though administering antibiotics and oral cleaning was ineffectual.