title: Recurrent pulmonary embolism due to hydatid disease of heart. Study of 3 cases, one with intermittent tricuspid valve obstruction (atrial pseudomyxoma).
abstract: Three cases of pulmonary hypertension caused by hydatid emboli from the right side of the heart are described; cardiac catheterisation was performed in 2. One case was confirmed at operation and 2 at necropsy. The pulmonary emboli were caused by hydatid vesicles in all 3 cases and in none was there pulmonary thrombosis; free scolices were found in the pulmonary alveoli in 2. In 1 patient with repeated syncopal attacks there was a pedunculated cyst in the right atrium which was though to have intermittently obstructed the tricuspid valve. Gamma radiography, angiocardiography, and necropsy suggested a mechanical cause for the pulmonary hypertenion with no vasoconstrictive element. The surgical patient was alive and well 18 months later.
mesh_terms: D000328:Adult; D004443:Echinococcosis / Q000150:complications* / Q000000981:diagnostic imaging; D005260:Female; D006331:Heart Diseases / Q000150:complications* / Q000000981:diagnostic imaging / Q000469:parasitology; D006349:Heart Valve Diseases / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011655:Pulmonary Embolism / Q000209:etiology* / Q000469:parasitology; D011859:Radiography; D014261:Tricuspid Valve