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(TEE). 5 In our presented case, CT scan was a rapid and accurate procedure which made possible the diagnosis of type B aortic dissection with right common iliac artery occlusion. The optimal treatment of type A acute aortic dissection associated with limb ischemia is surgical repair, whereas antihypertensive treatment and femoral bypass operation should be considered in patients of acute type B dissection with threatened leg ischemia when it is not complicated with rupture or visceral ischemia. 6 In conclusion, aortic dissection should be considered early in the differential diagnosis of individuals with acute pulse loss in the lower limb. Patients with threatened peripheral limb ischemia and type B dissections are effectively treated with peripheral operation, particularly if the dissection can be treated with medical therapy.