Malnutrition in oncologic patients has a negative impact on post- surgical recovery, survival
and quality of life. The etiology of malnutrition in cancer patients is multifactorial,
therefore, the nutritional assessment should be carried out by different parameters. The
objective of this study is to investigate the association and prognostic value of five
distinct methods of nutritional assessment (molecular, body composition, functional,
anthropometric and subjective) in relation to postoperative complications and short-term
survival in patients with cancer. Regarding the molecular parameter, mtor signaling pathwayon
will be assessed in rectus muscle samples, harvested in the moment of the operation. Body
composition was assessed by computed tomography (CT) and bioelectrical impedance test was
conducted to evaluate the phase angle. Handgrip strength was used to determine functionality.
The percentage of weight loss in relation to usual weight was the anthropometric parameter
used. Subjective Global Assessment (SGA) was used to provide the nutritional diagnosis.
Postoperative complications were classified according to the Dindo and Clavien
classification. Overall time survival was the period between the first assessment of the
patients until death or end of follow-up. Chi-square test, t test, Kaplan-Meier method and
the Log Rank test and regression analysis will be used (p <0.05).