age; sex; height; weight; type of tumour; classification of malignant tumours (TNM); progression of tumour and used therapy; blood sample to analyse albumin, creatine, hemoglobin, LDH and CRP; use of parental nutrition; dietary assessment; use of nutritional supplements; Quality of Life by using the EORTC-QlQ; Subjective Global Assessment; presence of Percutaneous endoscopic gastrostomy; use of enteral or parenteral nutrition; body composition based on a Bio Impedance Assessment; hand grip strength and mid upper arm circumference. Based on all these data points a easy to use tool/score for a hospital setting will be created. During the first assessment the measurements will be done in the morning and the evening to test the reproducibility.