HRCR Rare Diseases Article Collection
Cardiac lymphoma presenting as bradyarrhythmiaCardiac tumors have been a point of interest and controversy since the earliest attempt to categorize them in 1931 by Yater.1,2 Secondary cardiac tumors are 30 times more common than primary cardiac tumors, with an incidence of 1.7%–14% vs 0.001%–0.03% on autopsy.3 Primary cardiac tumors are most commonly benign (70%–80%).3,4 However, of the primary malignant cardiac tumors, lymphoma has been shown to account for 1%–1.6%.5,6 Up to 20% of patients with noncardiac primary lymphoma will exhibit cardiac metastases.
Malignancies masquerading as device pocket infectionsInfectious complications following cardiac implantable electronic device (CIED) implantation are associated with significant mortality. Establishing the correct diagnosis is important and not all presumed CIED pocket infections turn out to be infections. Rare cases of malignancy mimicking a pocket infection have been described. We present 2 cases of malignancy, initially thought to be a primary CIED pocket infection.