title: Massive right atrial myxoma presenting as syncope and exertional dyspnea: case report.
abstract: Primary heart neoplasms are rare occurring with an estimated incidence of 0.0017-0.19%. Myxoma is the most prevalent primary heart tumor. The right atrium is an unusual localization, occurring only in 15-20% of myxoma cases. We report a rare case of a massive right atrial myxoma causing tricuspid valve obstruction and presenting as syncope and exertional dyspnea. This case illustrates the influence of myxoma's size, position and mobility as well as patient's body posture and respiration to the development of signs and symptoms. Three-dimensional echocardiography proved useful in surgery planning, allowing a better definition of the tumor outline and attachment.
authors.affiliation: Cardiology Department, Centro Hospitalar do Alto Ave - Unidade de Guimarães, Guimarães, Portugal. olgazevedo@yahoo.com.br
authors.forename: Olga
authors.initials: O
authors.lastname: Azevedo
authors.forename: Jorge
authors.initials: J
authors.lastname: Almeida
authors.forename: Tânia
authors.initials: T
authors.lastname: Nolasco
authors.forename: Rosa
authors.initials: R
authors.lastname: Medeiros
authors.forename: Jorge
authors.initials: J
authors.lastname: Casanova
authors.forename: Carla
authors.initials: C
authors.lastname: Bartosch
authors.forename: João
authors.initials: J
authors.lastname: Almeida
authors.forename: Paulo
authors.initials: P
authors.lastname: Pinho
mesh_terms: D000368:Aged; D004417:Dyspnea / Q000209:etiology*; D004452:Echocardiography; D005260:Female; D006325:Heart Atria; D006338:Heart Neoplasms / Q000150:complications / Q000000981:diagnostic imaging*; D006801:Humans; D009232:Myxoma / Q000150:complications / Q000000981:diagnostic imaging*; D013575:Syncope / Q000209:etiology*