Two further cases of congenital diaphragmatic hernia with delayed presentation are reported: a 6-month-old male presented a posterolateral diaphragmatic hernia with small bowel in left hemithorax masquerading as pleural effusion; an 11-year-old boy with Down's syndrome presented a retrocostoxyphoid hernia revealed by vague faintness. The authors emphasize the deceptive clinical aspect, the different means for diagnosis, the risk of wrong diagnosis and pleural drain, the usual good outcome of these late-onset diaphragmatic herniation.