In a patient with intestinal ischemia, duplex scan findings might reveal stenoses in which arteries?

In cases of intestinal ischemia, the duplex scan findings typically reveal stenoses in the superior and inferior mesenteric arteries. These arteries supply blood to the intestines, and any narrowing or blockage in these vessels can lead to insufficient blood flow, resulting in ischemia.

The superior mesenteric artery (SMA) primarily supplies the small intestine and part of the large intestine, while the inferior mesenteric artery (IMA) supplies the distal part of the colon. When there is significant stenosis in either of these arteries, it can contribute to diminished perfusion of the bowel, leading to symptoms of intestinal ischemia, such as abdominal pain and weight loss.

The other artery options listed do not primarily supply the intestines, which makes them less relevant in the context of intestinal ischemia. For example, the subclavian and femoral arteries primarily supply the upper limb and lower limb, respectively, while the renal and iliac arteries are focused on renal blood flow and pelvic circulation. Similarly, while the aorta and celiac trunk are significant for abdominal supply, they don't directly correlate with intestinal ischemia as closely as the mesenteric arteries do.