INTRODUCTION
Malnutrition in cancer patients is very prevalent as at the time of diagnosis about half have some nutritional deficit. This deficit can happen in any setting and with any cancer types. Data has shown that gastrointestinal tract and head and neck (HNC) patients have the highest risk of malnutrition with some literature indicating HNC has the highest risk. This is because of the pre-treatment conditions, demographic factors, tumour itself, catabolic inflammation, reduced or increased resting energy expenditure and treatment modalities. Methods to assess malnutrition include DEXA x-ray, CT scan, MRI ad bioelectrical impedance analysis (BIA).

AIM
Quantitatively evaluate changes in the body composition (BC) and nutritional status using BIA that occur in HNC patients undergoing radiotherapy at Alexandria.

PATIENTS
•Patients between the ages of 18 and 70 years with histologically confirmed diagnosis of HNC.
•Patients receiving radiotherapy.
Exclusion criteria
•Patient with a pacemaker
•Patients with advanced kidney disease and decompensated liver failure.
•Patients who did not get a minimum of two radiotherapy treatments and BIA readings.