Answer to Question 1
Surgery is performed to remove tumors, determine the extent of cancer, and protect nearby tissues. Often, surgery must be followed by other cancer treatments to prevent the growth of new tumors. The acute metabolic stress caused by surgery raises protein and energy needs and can exacerbate wasting. Surgery also contributes to pain, fatigue, and anorexia, all of which can reduce food intake at a time when nutritional needs are substantial. Surgeries to the head and neck can cause dry mouth, reduced chewing and swallowing ability, and an increased risk of aspiration; esophageal surgery reduces swallowing ability and contributes to acid reflux; gastric surgery increases the risk of dumping syndrome and malabsorption of folate and iron; intestinal surgery can lead to diarrhea, malabsorption, and fluid and electrolyte imbalances; and pancreatic surgery increases the risk of diabetes.
Answer to Question 2
C