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Transcatheter closure of a traumatic ventricular septum defect resulting from a stab wound. A 25-year-old man with a ventricular septal defect resulting from a stab wound to his chest was admitted to our hospital. Because of extensive comorbidity and favourable location, transcatheter closure with an Amplatzer device was preferred over surgical repair. Ventricular septal defects are an uncommon complication of cardiac trauma, but when they do occur from this cause, they often have more dramatic consequences. Transcatheter closure is an attractive, less-invasive alternative in patients with increased surgical risk, multiple previous surgical interventions, or poorly accessible defects.