Hydatid cysts in the pulmonary artery: A rare cause of pulmonary embolism

Hydatid cysts in the pulmonary artery: A rare cause of pulmonary embolismA 38-year-old man presented with complaints of haemoptysis and dyspnoea.His physical examination revealed an increased respiratory rate of 26 cycles/minutes.The ECG was normal.The patient had increased D-dimer levels.Computed tomography angiography (CTA) revealed a large, well-defined cystic lesion in the right ventricular apex (Fig. 1, white arrow), attached to the right ventricular apical wall.There was no internal enhancement or calcification within the cyst.The pulmonary arteries were dilated with cystic attenuation filling defects in bilateral descending pulmonary arteries, causing their complete occlusion (Fig. 1, yellow arrow).These features were suggestive of pulmonary arterial dissemination of the hydatid cysts.A triangular-shaped peripheral opacity was noted in the lung parenchyma in the right middle lobe as a result of lung infarction secondary to pulmonary embolism (Fig. 1, red arrow).The patient subsequently underwent surgical management.Cystotomy and capitonnage of the right ventricular