Abstract
BACKGROUND: In lung transplantation, vascular complications are relatively rare. However, severe pulmonary artery stenosis after lung transplantation can cause clinical symptoms and lead to graft dysfunction. CASE PRESENTATION: The present patient underwent right lung transplantation for severe chronic obstructive pulmonary disease. After lung transplantation, pulmonary blood flow scintigraphy showed a decreased blood flow to the transplanted lung, and contrast-enhanced computed tomography showed pulmonary artery anastomotic stenosis. As the initial treatment, balloon dilation of the pulmonary artery was attempted and unsuccessful. Right pulmonary artery plasty was then performed 5 months after lung transplantation. Following the procedure, the pulmonary artery stenosis was released, and the blood flow to the transplanted lung improved. CONCLUSION: Surgical treatment should be considered for pulmonary artery stenosis after lung transplantation if minimally invasive intervention is not effective.