title: [Mitral valve obstruction by tumor embolus as a cause of irreversible cardiac arrest during right pneumonectomy].
abstract: A 26-year-old patient with a voluminous primary pulmonary hemangiopericytoma in the right lung, diagnosed through previous surgical biopsy, presented irreversible cardiac arrest during the hilar dissection portion of a right pneumonectomy. The patient did not respond to resuscitation efforts. Autopsy showed total obstruction of the mitral valve by a tumor embolism. In cases of large lung masses with hilar involvement, as in the case presented, we recommend preoperative evaluation using transesophageal echocardiography, magnetic resonance imaging or angiotomography. If injury to the pulmonary vessels or atrial cavities is detected, surgery with extracorporeal circulation should be arranged in order to allow resection of the intravascular or cardiac mass, together with pulmonary resection. We recommend that care be taken in order to recognize and treat this problem in patients not receiving a preoperative diagnosis.
authors.affiliation: Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil. haddad@ufrj.br
authors.forename: Rui
authors.initials: R
authors.lastname: Haddad
authors.forename: Carlos Henrique Ribeiro
authors.initials: CH
authors.lastname: Boasquevisque
authors.forename: Tadeu Diniz
authors.initials: TD
authors.lastname: Ferreira
authors.forename: Mario Celso Martins
authors.initials: MC
authors.lastname: Reis
authors.forename: Fernando D'Imperio
authors.initials: FD
authors.lastname: Teixeira
mesh_terms: D000328:Adult; D017809:Fatal Outcome; D006323:Heart Arrest / Q000209:etiology* / Q000473:pathology; D006338:Heart Neoplasms / Q000556:secondary*; D006393:Hemangiopericytoma / Q000601:surgery*; D006801:Humans; D007431:Intraoperative Complications / Q000209:etiology; D008175:Lung Neoplasms / Q000473:pathology / Q000601:surgery*; D008297:Male; D008946:Mitral Valve Stenosis / Q000209:etiology* / Q000473:pathology; D009360:Neoplastic Cells, Circulating; D011013:Pneumonectomy / Q000009:adverse effects*; D011300:Preoperative Care