A 43-year-old man complains of abdominal pain just above his umbilicus. On examination, a tumor is found anterior to the IVC. Which of the following structures would most likely be compressed by this tumor?: (A) Right sympathetic trunk, (B) Left third lumbar aery, (C) Third pa of the duodenum, (D) Left renal aery
Answer is C. The third pa of the duodenum (transverse poion) crosses anterior to the IVC. The other structures do not cross the IVC anteriorly.