INTRODUCTION: Penetrating cardiac injuries is still a diagnostic problem at this time. Their management requires immediate surgical intervention and excellent surgical critical care postoperatively. PRESENTATION OF CASES: A 15-year old male patient was stabbed with a knife to the right chest. The chest radiograph showed an haemothorax and the angiography showed an intercostals artery and a right auricle injury. After an emergency operation the patient was released home in good condition after the toracotomy had healed. A 19-year old male patient was stabbed with a knife to the chest more than once. By a left toracotomy we sutured the lesion of the left ventricle with multiple single stitch in non-absorbable suture, we covered the suture with a sealant. The patient released home in 24 days. DISCUSSION: Penetrating cardiac injuries is one of the leading cause of death from urban violence. To evaluate a thoracic trauma with cardiac injury it’s clear the use of thorax X-ray and multislice angio-Tc scan. Echocardiography has clearly emerged for the diagnosis in patients haemodynamically stable. When the patient is haemodynamically unstable the emergency thoracotomy is mandatory. CONCLUSION: Despite the high mortality of penetrating cardiac injuries new surgical and radiological tecniques may help surgeon to save this patients.