Pulmonary Artery Aneurysm Diagnosed by Dynamic Digital Chest Radiography

Pulmonary artery aneurysms (PAAs) are rare, but clinically important because their rupture can cause sudden death. We present the first case of an asymptomatic patient with an unruptured PAA that was successfully diagnosed by dynamic digital chest radiography (DDCR) and was treated surgically. DDCR is a state-of-the-art temporally resolved radiographic technique that offers high-quality fluoroscopy-like images at a low radiation dose. Although noncontrast chest computed tomography (CT) revealed only a nonspecific nodule, DDCR delineated this lesion as a pulsatile nodule synchronized with cardiac pulsations, establishing the diagnosis of PAA. This diagnosis was confirmed by CT pulmonary angiography and surgery.