We report a case of aortic arch rupture due to blunt chest trauma. The patient was a 66-year-old man who was driving a motorcycle and collided with a parked car. The chest roentogenogram showed mediastinal widening and computed tomography showed hematoma of the mediastinum and intimal tear of the aortic arch. As his hemodynamic state was stable, he underwent aortography which demonstrated pseudoaneurysm of the aortic arch. An emergency operation was performed under cardiopulmonary bypass with selective cerebral perfusion. The intimal and medial tear of the aortic arch and left common carotid artery were replaced with grafts and his postoperative course was uneventful. Traumatic aortic rupture is frequent in the descending aorta but aortic arch injury is rare. Immediate diagnosis and surgical repair are necessary in such cases.

A 75-year-old woman was admitted with complaints of progressive portprandial abdominal pain and weight loss. A bruit was audible in the epigastrium. Angiogram showed narrowing of the lower abdominal aorta with complete occlusion of the celiac, the superior and inferior mesenteric arteries. A 6mm Gore-Tex graft was first anastomosed from the supraceliac abdominal aorta to the superior mesenteric artery. A saphenous vein graft was then inserted proximally to the Gore-Tex graft and distally to the celiac artery. The postoperative course was uneventful. During two years of observation symptoms have disappeared and patient returned to a normal weight.

A 95-year-old man suffered repeated episodes of loss of consciousness. Ruptured abdominal aortic aneurysm with giant retroperitoneal hematoma was diagnosed by computed tomography scans, and was referred to our hospital for surgical management. As he was about to be transported cardiopulmonary arrest developed, and emergency operation was started under resuscitation for pulseless electrical activity condition. We found a left common iliac artery aneurysm intraoperatively. We improved his hemodynamics by clamping the infrarenal abdominal aorta, and performed replacement of the left common iliac artery with a tube graft as quickly as possible. We inserted an intestinal drainage tube because of the expected high intraperitoneal pressure which caused by marked edema of the intestinal tract. He was weaned from respiratory support on the 5th postoperative day. He could walk on his own and was successfully discharged on the 28th postoperative day.

Type B intramural hematoma (IMH) is not considered to be a life-threatening condition, and medical treatment is the first treatment choice. We report 2 cases of ruptured type B intramural hematoma. Total arch replacement was performed via median sternotomy, which is not a common surgical strategy for type B dissection. Case 1 : a 77-year-old woman was transferred to our hospital with chest and back pain. CT revealed type B IMH with a large hematoma in the anterior mediastinum. She underwent total arch replacement, but she died of respiratory failure on the 167th postoperative day. Case 2 : a 60-year-old man was transferred to our hospital with chest and back pain. CT revealed a type B IMH with a large hematoma on the anterior side of the arch. He underwent total arch replacement, but died of sepsis on the 13th postoperative day. We had 2 rare cases of ruptured type B IMH. In both cases, postoperative courses were problematic. However, median sternotomy could be an approach for ruptured type B dissection in some cases.