A Morgagni hernia is one of the congenital diaphragmatic hernias. It is rarer than the Bochdalek hernia and accounts for approximately 2% of all congenital diaphragmatic hernias. It is characterised by herniation through the foramen of Morgagni which is located immediately adjacent to the xiphod process.
The majority of hernias occur on the right side and are generally asymptomatic. However, newborns may present with respiratory distress at birth similar to Bochdalek hernia. Additionally, recurrent chest infections and gastrointestinal symptoms have been reported in those with previously undiagnosed Morgagni's hernia. In asymptomatic individuals, laparoscopic surgical repair is still recommended because there remains a risk of bowel prolapse and subsequent strangulation.
As compared to the Bochdalek hernia, the Morgagni hernia is:
- at low risk of prolapse
The main differential diagnosis for Morgani's hernia is a cardiophrenic fat pad. Other cardiophrenic angle lesions can be considered in the differential diagnosis on plain film, although Morgani's hernia is relatively radiolucent compared to other lesions not containing fat.
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