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Late presentation of traumatic diaphragmatic hernia in pregnancy.

Penetrating knife wounds in the chest usually result in pneumothorax or haemothorax, the majority of which will resolve with insertion of a chest drain without requiring thoracotomy.1 Injuries on the left side of the chest wall below nipple level (5th intercostal space) are at risk of injuring the diaphragm, many of which will be asymptomatic and present many months or years after the original injury.2 We present four cases where delayed presentation was precipitated by pregnancy (Table 1). Patients