The imaging manifestations of diaphragmatic hernia and diaphragmatic distension were retrospectively analyzed and summarized, combined with the surgical findings, to summarize the differences in indirect signs of diaphragmatic hernia and diaphragmatic distension, so as to achieve the purpose of differential diagnosis.Research contents: (1) To summarize the characteristics of indirect imaging signs in patients with diaphragmatic hernia, to sum up the incidence of each sign, to find new signs and the prognosis of each sign; (2) Summarize the characteristics of indirect imaging signs in patients with diaphragmatic distension, summarize the incidence of each sign, and search for new signs and the prognosis of each sign; (3) To summarize the differences in indirect signs of diaphragmatic hernia and diaphragmatic distension, as well as the differences in their incidence, and combined with their surgical findings, to summarize their image identification points

Inclusion Criteria:

• Clinical diagnosis of diaphragmatic hernia with surgical treatment
• Clinical diagnosis of congenital diaphragmatic eventration with surgical treatment

Exclusion Criteria:

• Diaphragmatic hernia or congenital diaphragmatic eventration without surgical treatment
• Diaphragmatic hernia or congenital diaphragmatic eventration without imaging examination

The Bochdalek hernia and the congenital diaphragmatic eventration were included in the study. They had undergone surgical treatment.The imaging results and the surgical results were analysis