Diagnosis of pulmonary artery sarcoma with esophageal endoscopic ultrasound-guided needle aspiration.

Intraluminal sarcoma of the pulmonary artery is a rare malignant neoplasm with aggressive behaviour. Differential diagnosis with pulmonary embolism, metastasis or even pseudotumors can be complex and the site of the tumour can pose a significant diagnostic challenge, as the pulmonary arteries are not easily accessible for diagnostic sampling. We describe a case of primary pulmonary artery sarcoma diagnosed with endoscopic ultrasound-guided needle aspiration/biopsy through transesophageal access. [ABSTRACT FROM AUTHOR]