Key result
Removal of cardiac myxoma normalized elevated MPO-ANCA and IL-6 levels in a patient presenting with pseudovasculitis mimicking polyarteritis nodosa.
Cardiac myxoma can present with MPO-ANCA-associated pseudovasculitis mimicking polyarteritis nodosa, which resolves upon tumor resection.
Consider cardiac myxoma in MPO-ANCA pseudovasculitis; single case leaves open generalizability and need for confirmatory studies.
We describe a case of cardiac myxoma whose clinical presentation mimicked that of polyarteritis nodosa. The serum levels of MPO-ANCA and IL-6 were elevated on laboratory investigation and normalized after the removal of the tumor. We suggest that a 'true' vasculitic mechanism contributes to the pathogenesis of pseudovasculitis in cardiac myxoma.
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Nishio et al. (2005) studied this question. Removal of cardiac myxoma normalized elevated MPO-ANCA and IL-6 levels in a patient presenting with pseudovasculitis mimicking polyarteritis nodosa.
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