Takayasu's arteritis involving the pulmonary arteries: Evaluation by quantitative dual-energy computed tomographic pulmonary angiography

摘要

A 41-year-old man was transferred to our hospital because of sudden hemiparalysis of his right limbs for 4 days. Physical exam showed paralysis of his right limbs, muscle power of grade 0, and sensation loss. He had undergone a negative head computed tomographic (CT) exam at an outside hospital. However, magnetic resonance (MR) imaging and MR angiography showed acute cerebral infarct in his left frontoparietal lobe resulting from occlusion of the left middle cerebral artery. Digital subtraction angiography displayed severe bilateral stenosis or occlusion of the common carotid and vertebral arteries and collateral vessels between the left vertebral artery and the left interrtal carotid artery.