<prompt> A 54-year-old man comes to a hospital with abdominal pain, jaundice, loss of appetite, and weight loss. On examination of his radiograms and CT scans, a physician finds a slowly growing tumor in the uncinate process of the pancreas. Which of the following structures is most likely compressed by this tumorSplenic aeryPoal veinSuperior mesenteric aerySuperior pancreaticoduodenal aery  <response>: Tumour of uncinated process of pancreas leads to pressure onSuperior mesenteric aerywhich passes below it. 