Atrial myxoma

There are no specific criteria. Diagnosis is based on clinical presentation and finding of a cardiac mass, which is most frequently present in the left atrium. The cardiac mass in the atrium most commonly (in 80% of cases) arises from the region of the septal fossa ovalis.[4]Pinede L, Duhaut P, Loire R. Clinical presentation of left atrial cardiac myxoma. A series of 112 consecutive cases. Medicine (Baltimore). 2001 May;80(3):159-72. http://www.ncbi.nlm.nih.gov/pubmed/11388092?tool=bestpractice.com The diagnosis is confirmed by histologic examination. The specimen for histology is obtained from either surgery or biopsy via a thoracotomy or transvenous approach.