A 68-year-old man with a history of dyslipidemia and an elevated Lp(a) lipoprotein level developed acute abdominal pain and had tenderness to deep palpation on the right side of his abdomen. A computed tomographic scan demonstrated thickening of the ascending colon consistent with ischemic colitis. Hydration and antibiotic administration rapidly relieved his pain. Subsequent duplex imaging of the superior mesenteric artery revealed poststenotic turbulence and elevated peak velocities were noted. He was referred for angiography (Figure).