We report the diagnosis and outcome of a fetus with an unusual left ventricular wall defect. A 34-week fetus presented for echocardiographic evaluation because of an irregular cardiac rhythm. Fetal echocardiography revealed frequent ventricular ectopy and an “accessory” ventricular chamber diagnosed as a left ventricular diverticulum (LVD). The ectopy resolved in utero but recurred after delivery. Angiography revealed a “bifid” LVD. Inderal therapy suppressed the ventricular ectopy. The association between ventricular ectopy and LVD is unusual, but the prognosis of LVD even with arrhythmia is excellent.
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