Thoracic injuries account for 20-25% of deaths due to trauma. It is known that traumatic cardiac penetration is highly lethal, with case fatality rates of 70-80%.1 With the advent of CT imaging in addition to SXE and ECHO ultrasound scanning, of cardiac injury, an accurate identification of these poten¬tially lethal injuries have reduced. Such systems of investigations have created a significant improving survival of patients. Most of these patients need surgery and Emergency thoracotomy has an important role in emergency hospitals and can save a lot of lives. Urban areas tend to have higher rates of interpersonal violence and a correspondingly higher percentage of injuries involve penetrating mechanisms compared to rural regions. Delayed pericardial effusion, has rarely been described and it has not been commonly reported in the literature since 1960 but it does happen in patients whose heart penetration has been missed or the patient has had surgery. Citation: Mugala DD, Makupe A, Ziddulla, et al. Occurrence of penetrating chest and hearts injury following assaults : a presentation of two cases. MOJ Clin Med Case Rep. 2018;8(2):88-89. Citation: Mugala DD, Makupe A, Ziddulla, et al. Occurrence of penetrating chest and hearts injury following assaults : a presentation of two cases. MOJ Clin Med Case Rep. 2018;8(2):88-89.