92P ulmonary artery aneurysms are very rare with only 8 cases found in a review of 109,571 general necropsies (1). Common etiologies of pulmonary artery aneurysms and pseudoaneurysms are infection (fungal, tuberculosis [Rasmussen's aneurysm], syphilitic or bacterial), structural cardiac abnormalities (patent ductus arteriosus [PDA], atrial septal defect, ventricular septal defect, tetralogy of Fallot, pulmonary valve stenosis, pulmonary valve regurgitation, absent pulmonary valve, transposition of great arteries), vasculitis (Behcet disease, HughesStovin syndrome), chronic pulmonary embolism, iatrogenic (e.g., malpositioned Swan-Ganz catheters), and post-traumatic.Treatment options described earlier were predominantly surgical namely aneurysmectomy, lobectomy, patch repair or dacron graft replacement (2-8). Endovascular techniques like coil embolization (9-11), glue embolization (12, 13), balloon embolization (14), or stent graft placement (15, 16) have been used lately. These are less invasive with minimal damage to the normal lung parenchyma.We deployed an Amplatzer PDA occluder in a 13-year-old boy with a calcified pulmonary artery pseudoaneurysm wherein the feeding artery was short and broad and hence did not appear amenable to coil embolization.
Case reportA 13-year-old boy was referred to the cardiology department with a diagnosis of pulmonary artery aneurysm of unknown etiology. He had been febrile for the past 15 days with no localizing symptoms. There was no history suggestive of vasculitis or tuberculosis in the child or in the family. The boy's physical growth was normal and routine biochemical and hematological investigations were unremarkable.Posteroanterior chest radiograph revealed a well-defined spherical soft tissue opacity with calcified rims in the posterior left lower lobe (Fig. 1). Computed tomography (CT) angiography was done using nonionic contrast and revealed a saccular aneurysm of 3.8 x 3.7 x 3.3 cm arising from the left lower lobe pulmonary artery. This aneurysm had a short neck with a narrow ostium measuring 0.88 cm. There was a thin shell-like calcification of the wall and the cavity did not have a thrombus. The pulmonary artery branch before and beyond the aneurysm had a normal caliber and flow, suggesting it to be more likely a pseudoaneurysm. There was no parenchymal abnormality seen in the lungs (Figs. 2 and 3).Cardiac catheterization was done with a view to block the pseudoaneurysm. Selective injections of the left lower lobe pulmonary artery revealed the feeder vessel clearly that did not appear to be amenable (Fig. 4) to coil embolization. Occluding the aneurysm by placing multiple coils in the sac also did not appear to be a good option given
INTERVENTIONAL RADIOLOGY CASE REPORTTranscatheter treatment of pulmonary artery pseudoaneurysm using a PDA closure device Priya Jagia, Sanjiv Sharma, Rajnish Juneja, Randeep Guleria ABSTRACT Aneurysm of the branch pulmonary arteries are rare. The treatment options vary from case to case and include either surgery or percutaneous transcat...