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The authors report their experience of 21 cases of post-traumatic hernias of the diaphragm. On the basis of the results obtained by discussion of etiologic, diagnostic and therapeutic patterns they make at the conclusion that the high mortality, associated with diaphragmatic hernias, can be reduced only with a short time of diagnosis and a prompt surgical treatment of the associated lesions.

On the basis of the observation of one case of delayed presentation of traumatic diaphragmatic rupture of the left side with a late diaphragmatic hernia, the authors examine the evolution of the occurrence of this pathology during the last 20 years. The clinical signs and the modality of presentation of the lesions of delayed diagnosis appear absolutely non specific. Incorrect interpretation of the X-ray or only intermittent hernial symptoms are frequent reasons for incorrect diagnosis. Also the initially non recognition of the possible manifestation of the diaphragmatic hernia following blunt or penetrating injuries is usually because the practitioner has not sought it. The diaphragmatic domes must be systematically explored during the laparotomy or thoracotomy performed for thoraco-abdominal trauma. Surgical treatment of long-standing post-traumatic diaphragmatic hernia is the same as that applicable in the recent hernias.