A 16-year-old male presented with abdominal pain, vomiting, and constipation for 3 days. Imaging showed a left diaphragmatic rupture with herniation of abdominal organs into the left hemithorax, likely resulting from a previous stab wound injury 2 months prior that was repaired but resulted in a diaphragmatic defect. The patient underwent surgery to repair the diaphragmatic rupture and his recovery was uneventful.