Intracardiac mural thrombus mimicking atrial myxoma in the antiphospholipid syndrome

Elie Gertner, James W Leatherman

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A wide spectrum of cardiac involvement including valvular lesions, myocardial infarction and myocardial dysfunction has been reported in patients with antiphospholipid antibodies (aPL), suggesting that cardiac manifestations may be part of the antiphospholipid syndrome (APS). We describe 3 patients (2 with primary APS and one with APS and SLE) who were found to have right atrial masses by echocardiography (transthoracic and/or transesophageal) and/or angiography, which were felt preoporatively to be atrial myxomata. Pathological examination of resected material showed only organized thrombus with calcification. We describe outcome 12 months to 7 years after resection of thrombus and document possible recurrence in one patient after 7 years. Intracardiac mural thrombus may be an additional cardiac manifestation of the APS, and presents considerable diagnostic confusion in its differentiation from atrial myxomata.

Original languageEnglish (US)
Pages (from-to)1293-1298
Number of pages6
JournalJournal of Rheumatology
Issue number8
StatePublished - Jan 1 1992


  • antiphospholipid syndrome
  • atrial myxoma
  • thrombus


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