[Bochdalek's hernia with retroperitoneal contents in adults]

The authors report a case they had the opportunity to observe, surgically treated (thoraco-phrenotomy, removal of the herniated mass, repair of the diaphragmatic breach). They illustrate the genesis of such abnormality, its incidence and symptomatology. The Authors, moreover, dwell upon the diagnostic problems caused by Bochdalek's hernia with retroperitoneal contents, and upon the advantages shown by the thoracic way of aggression in the light of their own experience.