Thrombus on the Chiari Network

Miryam Martínez-Pascual del Riquelme, Santiago Egea-Beneyto, Juan Ortega-Bernal, Juan A. Castillo-Moreno, José D. Cascón-Pérez, Pedro García-Urruticoechea


The presence of a mass in the right atrium requires a broad differential diagnosisincluding tumors, vegetations, thrombus, Eustachian valve, or Chiari´s network.Traditionally, these etiological possibilities have been considered exclusive. Thisreport describes the case of a male patient with catarrhal symptoms, generalizedtenderness, and low-grade fever, diagnosed with atrial fibrillation and -throughechocardiography- a mobile, elongated mass in the right atrium. Differentetiological entities were proposed, and finally heparin treatment was started,which resolved the mass with persistence of a filamentous structure consistentwith Chiari´s network.


Cloez JL, Neimann JL, Chivoret G, Danchin N, Bruntz JF, Godenir, JP et al. Echographic rediscovery of an anatomical structure: the Chiari network. Apropos of 16 cases. Arch Mal Coeur Vaiss 1983; 76 (11): 1284-92.

Patanè S, Anfuso C, Marte F, Minutoli F, Di Bella G, Coglitore S. An unusual presentation of a right atrial Chiari network. Int J Cardiol 2009; 132 (1): e28-30.

Edwards P, Wozniak M, Corretti M, Price TR. Cardiac chiari network as an etiology for embolic stroke. J Stroke Cerebrovasc Dis 1994; 4 (4):238-241.

Rizzello V, Lombardo A, Colizzi C, Pennestrì F. Entrapment of a floating thrombus in the right atrium by persistent Chiari's network: A barrier to massive pulmonary embolism. Int J of Cardiol 2009; 132 (1): e40-e41.

Benbow EW, Love EM, Love HG, MacCallum PK. Massive right atrial thrombus associated with a Chiari network and a Hickman catheter. Am J Clin Pathol 1987; 88 (2): 243-8.

Full Text


  • There are currently no refbacks.

Licencia Creative Commons
The documents published in this journal are under the licencia Creative Commons Atribución-NoComercial-Compartir-Igual 2.5 Argentina.

Revista argentina de cardiología. ISSN en línea 1850-3748. Argentine journal of cardiology (English ed. Online ISSN 2314-2286) Sociedad Argentina de Cardiología. Azcuénaga 980 (C1115AAD),Ciudad Autónoma de Buenos Aires, República Argentina. Tel. (54 11) 4961-6027/8/9 Fax: 4961-6020