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Purpose Removal of the hernia sac for Morgagni diaphragmatic hernia repair in infants and children is a controversial issue. In our series, we elected not to excise the sac in all the cases. Methods Nine children with retrosternal (Morgagni) hernias underwent primary laparoscopic repair without excision of the hernia sac, and we analyzed our results, complications, and outcome. Results Between January 2007 and March 2011, nine children, comprising five boys and four girls, with Morgagni hernia underwent repair laparoscopically at our hospital. The mean age of the children was 15.1 months (range, 3–38 months), mean operative time was 50.5 min, and mean hospital stay was 3.6 days. There were no intraoperative or postoperative complications. The mean follow-up time was 32.8 months (range, 6–54 months). There were no recurrences. All patients had complete obliteration of the residual cavity. Conclusion Laparoscopic closure of the defect by suturing the posterior rim of the hernia to the full thickness of the anterior abdominal wall without excision of the hernia sac is safe and effective in repairing Morgagni hernia without any risk accruing from leaving the hernia sac intact. Keywords: laparoscopic Morgagni hernia repair, Morgagni diaphragmatic hernia, retrosternal diaphragmatic hernia