EN
The incidence of malignancies, including haematological malignancies, is increasing among the world population. The most important issue is the fact that as a result of these malignancies, a patient involuntarily losses body weight which is caused by improper manner of nutrition and connected with it: postoperative complications, decreased response to treatment, increased risk of collapses, hospital-acquired infection and the increased risk of demise. Thus, one should strive to identify the nutrition disorders and that will enable to introduce a proper nutrition intervention and improve the clinic and therapeutic results. At the same time, it is crucial to arrange a diet therapy on the basis of the patient’s current state of health, deficiencies and disorders, planned nutrition period and the possibility of preparation and consumption of specific meals.