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  • Title: Use of Cardiac MRI to Assess Antitumor Efficacy of Everolimus in Sporadic Cardiac Rhabdomyoma.
    Author: Davis KA, Dodeja AK, Clark A, Hor K, Baker P, Cripe LH, Cripe TP.
    Journal: Pediatrics; 2019 Jun; 143(6):. PubMed ID: 31088894.
    Abstract:
    Cardiac rhabdomyoma is the most common neonatal cardiac tumor and is typically associated with tuberous sclerosis complex (TSC). Although these tumors may naturally regress, some patients require surgical resection because of cardiac instability. If not fully resected, patients may also require medical therapy to improve their hemodynamics. Everolimus, a mammalian target of rapamycin inhibitor, has shown promise in reducing rhabdomyoma in patients with TSC, but the drug's impact in patients without TSC has not been reported. Monitoring of tumor response has typically been limited to echocardiograms, which is not ideal given inherent difficulties in three-dimensional measurements. We report a case of sporadic cardiac rhabdomyoma in a neonate treated with everolimus resulting in tumor regression as documented by cardiac MRI. While on everolimus, our patient had an increased incidence of a preexisting arrhythmia, which resolved with planned cessation of therapy, suggesting that close monitoring is imperative in patients with arrhythmia.
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