Cardiac tumors - benign

Topic Completed: 1 November 2013

Revised: 27 September 2019

Copyright: 2007-2019, PathologyOutlines.com, Inc.

PubMed Search: Varix [title] heart

Nat Pernick, M.D.
Page views in 2018: 224
Page views in 2019 to date: 312
Cite this page: Pernick N. Varix. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/hearttumorvarix.html. Accessed December 8th, 2019.
Definition / general
  • Usually dilated thrombosed vein in right atrium that arises from inferior rim of fossa ovalis
  • Incidence varies from 0.1% to 2.5% at autopsy
  • Asymptomatic
Case reports
Gross description
  • Blue, raised area inferior to fossa ovalis
Gross images
Missing Image

Blue discoloration of endocardium (arrowhead) just above coronary sinus (CS) and posterior to rim of fossa ovalis (FO)

Microscopic (histologic) description
  • Unilocular, blood filled cyst lined by endothelial cells and filled with organizing thrombus
Microscopic (histologic) images
Missing Image

Dilated vein with focal attenuation of wall

Differential diagnosis
  • Blood cyst: congenital, along lines of closure of heart valves
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