Intercostodiaphragmatic hernia secondary to a bull gore injury: a delayed detection.

We report a case of a 45-year-old male presenting with asymptomatic right lower chest mass following a forgotten penetrating trauma. This case highlights a rare; delayed complication of lower chest penetrating injuries by the bull gore, involving the diaphragm. Intercostodiaphragmatic hernia should be kept as a differential diagnosis of slowly growing lower chest wall asymptomatic masses with forgotten injuries in the past.