Different CT findings of aortic hemorrhage extending to pulmonary artery from stanford type a aortic dissection

Hemorrhage extending to the pulmonary artery is an uncommon complication of Stanford type A aortic dissection that has a poor prognosis. Diagnosis of this complication is mainly dependent on imaging studies, especially computed tomography. High attenuation can be seen along the wall of the pulmonary artery on the non-enhanced study, while the enhanced study shows luminal narrowing and wall thickening of the pulmonary artery. We report three cases with different imaging findings of hemorrhage extending to the pulmonary artery from Stanford type A aortic dissection.