the nutritional status of a tumor patient can be negatively influenced by the local and systemic effects of the malignant tumor ( tumor cachexia , anorexia , difficult oral food intake ) , by the effects of the various antitumoral therapy modalities ( surgery , radiotherapy , chemotherapy ) , and by the complications associated with such modalities ( anorexia , nausea , vomiting , mucositis , xerostomia , alterations of the smell and taste sensations , odynophagia , dysphagia , maldigestion , malabsorption , diarrhea , steatorrhea , conditioned aversions , radiogenic late effects ) , as well as by the psychological reactions of the patient to the real or feared existence of his tumor .
C0024523
malabsorption
C0038238
steatorrhea