Abstract
Introduction. Intimal sarcoma is a very rare tumor arising within the intima of the pulmonary artery. Preoperative diagnosis of pulmonary artery sarcoma is difficult, and the tumor is sometimes misdiagnosed as pulmonary thromboembolism. We report a case of pulmonary artery intimal sarcoma successfully diagnosed by preoperative endovascular biopsy and treated via right pneumonectomy and pulmonary arterioplasty. Presentation of a Case. A 72-year-old woman was referred to our hospital with a low-attenuation defect in the lumen of the right main pulmonary artery by computed tomography. Pulmonary artery thromboembolism was suspected, and anticoagulation therapy was administered. However, the defect in the pulmonary artery did not improve. Endovascular catheter aspiration biopsy was performed. Histological examination revealed pulmonary artery sarcoma. The patient was treated with right pneumonectomy and arterioplasty with the use of cardiopulmonary bypass. Discussion. Preoperative biopsy by endovascular catheter is worth considering for a patient with a tumor in the pulmonary artery and can help in planning treatment strategies.
Highlights
Intimal sarcoma is a very rare tumor arising within the intima of the pulmonary artery
Pulmonary artery sarcoma is a very rare tumor that is sometimes misdiagnosed as pulmonary thromboembolism
We present a case in which pulmonary artery sarcoma was diagnosed by transvenous endovascular catheter biopsy preoperatively, and right pneumonectomy with arterioplasty was successfully performed
Summary
Pulmonary artery sarcoma is a very rare tumor that is sometimes misdiagnosed as pulmonary thromboembolism. A few cases have been preoperatively diagnosed as pulmonary sarcoma. We present a case in which pulmonary artery sarcoma was diagnosed by transvenous endovascular catheter biopsy preoperatively, and right pneumonectomy with arterioplasty was successfully performed
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