[The diaphragmatic relaxatio (author's transl)].

The Authors briefly describe two cases of diaphragmatic relaxatio that they have seen and studied; then they make a revision of the literature about this uncommon disease. They speak about embryogenesis of the diaphragm and about nosology, etiopathogenesis, frequency (ages and sex) and phatological anatomy of this disease. In conclusion the Authors discuss in detail signs and symptoms, diagnosis and surgical treatment of diaphragmatic relaxatio.