Diaphragmatic injuries due to penetrating traumas to the thorax progress insidiously. Proper diagnosis might onlybe performed after months. Delayed diagnosis increases morbidity and mortality. Herein, we present a case ofdiaphragm injury due to penetrating thoracic trauma that was diagnosed 2 years later. The case was referred toemergency service with bowel obstruction symptoms and after the examinations, first laparotomy and then thoracotomywere performed. The trace of the injury tract should be evaluated in all penetrating thoracic traumas anddiaphragmatic injury should be taken into consideration. It is important to keep in mind that thoracic symptomscould be obscured and, if needed, further evaluation and surgical exploration should be performed. In the absenceof early symptoms, failure to recognize diaphragmatic injuries can result in mortality.