mucositisListen to pronunciation(myoo-koh-SY-tis)A complication of some cancer therapies in which the lining of the digestive system becomes inflamed. Often seen as sores in the mouth.More InformationMouth and Throat Problems: Cancer Treatment Side EffectsOral Complications of Cancer TherapiesSearch NCI's Dictionary of Cancer TermsStarts withContainsBrowse:ABCDEFGHIJKLMNOPQRSTUVWXYZ#