title: A rare intrapericardial mass in a neonate.
abstract: We describe a rare case of a neonate born with an intrapericardial mass composed of extralobar pulmonary sequestration and a cyst of bronchogenic origin. After an uneventful delivery, this full-term newborn was noted to be grunting and indrawing. He remained tachypneic despite adequate management for bilateral pneumothoraces. Diagnostic studies showed a 3 x 3 x 4 cm diameter cystic lesion in the anterior mediastinum causing posterior-lateral displacement of the superior vena cava. The heart itself was structurally normal. Bronchoscopy and esophagoscopy failed to detect any structural abnormalities. At 3 weeks of age, sternotomy and resection of the lesion was performed. The mass was clearly intrapericardial and consisted of sequestrated pulmonary tissue with a unilocular mucus filled bronchogenic cyst. Small systemic tributaries fed the lesion from the posterior-superior aspect. There was no connection with the heart or great vessels. Postoperative recovery was uneventful.
authors.affiliation: Department of Surgery, Royal Alexandra Hospital, Edmonton, Alberta, Canada.
authors.forename: A H
authors.initials: AH
authors.lastname: Hayashi
authors.forename: D R
authors.initials: DR
authors.lastname: McLean
authors.forename: A
authors.initials: A
authors.lastname: Peliowski
authors.forename: A J
authors.initials: AJ
authors.lastname: Tierney
authors.forename: N N
authors.initials: NN
authors.lastname: Finer
mesh_terms: D001980:Bronchi; D001998:Bronchopulmonary Sequestration / Q000473:pathology / Q000601:surgery; D002828:Choristoma / Q000151:congenital* / Q000473:pathology / Q000601:surgery; D006801:Humans; D007231:Infant, Newborn; D008168:Lung; D008297:Male; D008479:Mediastinal Neoplasms / Q000151:congenital* / Q000473:pathology / Q000601:surgery; D010496:Pericardium / Q000473:pathology* / Q000601:surgery