[Diaphragmatic hernia of Morgagni-Larrey in adults: analysis of 10 cases]

Congenital diaphragmatic hernia of Morgagni-Larrey is a rare entity that usually presents on the right side. These hernias, occurring in the anterior midline through the sternocostal hiatus of the diaphragm, are usually discovered incidentally when the patient has reached adulthood, or when they become symptomatic due to intestinal involvement (occlusive symptoms) or when respiratory dysfunction occurs. We present 10 patients (mean age: 69 years) with symptomatic sternocostal hernia and intestinal occlusion. In 7 patients, the hernia was located on the right (Morgagni's hernia) and in three it was located on the left (Larrey's hernia). Most of the patients presented important associated comorbidity, mainly cardiovascular and neoplastic. Surgical treatment consisted of reduction of the contents of the herniated sac and hernia repair through simple suture with or without mesh for reinforcement, mainly through the abdominal approach. Mortality in this series was nil. The infrequency of this entity and its diagnosis mainly in adults, with a high prevalence of circumstances favoring abdominal hernias, suggest that an embryological defect of the sternocostal foramina of Morgagni or Larrey are an essential element in the physiopathology of these processes.