Serial imaging changes during treatment of Takayasu arteritis with pulmonary artery stenosis.

Most cases of chronic stenosis or occlusive lesions of the pulmonary arteries are attributed to thromboembolism, and pulmonary arteritis is extremely rare as the primary cause of these entities. We report a case of pulmonary stenosis and occlusion caused by Takayasu arteritis. The patient was a 54-year-old woman who presented with dyspnea. Total occlusion of the left pulmonary artery and significant stenosis of the right pulmonary artery caused by Takayasu arteritis were confirmed by various imaging modalities including pulmonary angiography, 18fluorodeoxyglucose-positron emission tomography, magnetic resonance imaging and real-time three-dimensional transesophageal echocardiography. After 6 weeks of steroid therapy, follow-up imaging studies showed that the stenotic lesion had resolved.