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Updated: Apr 25, 2026

Visualization of Streptococcus pneumoniae within Cardiac Microlesions and Subsequent Cardiac Remodeling
Published on: April 7, 2015
Isolated right-sided mural infective endocarditis in a 32-year-old woman with muscular ventricular septal defect
Kwan Yong Lee1, Jeong-Eun Yi, Donggyu Moon
1Division of Cardiology, Department of Internal Medicine, The Catholic University of Korea, College of Medicine, Seoul, Korea.
Abstract:
Bacterial endocarditis secondary to jet streams from a congenital heart defect without valvular involvement is very rare, especially in adult patients. We report an unusual case of a 32-year-old woman with a previously known unrepaired ventricular septal defect (VSD) who presented with intermittent fever and chills after dental treatment and was diagnosed with isolated right-sided mural infective endocarditis associated with a muscular-type VSD. Echocardiography revealed a low echogenic, mobile vegetation along the right ventricular outflow tract (RVOT) free wall and a small-sized muscular-type VSD. The patient's blood culture grew Streptococcus viridians. After 3 weeks of antibiotic treatment, VSD patch closure was performed, and the vegetation on the RVOT endomyocardium was removed.
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