In contrast to the world thoracic literature, less attention has been payed to blunt diaphragmatic ruptures in hungarian surgical literature.Based on 12 cases of blunt traumatic diaphragmatic rupture at Thoracic Surgical Clinic (1981-2001, circumstances of late recognition is evaluated. In majority of patients history of thoracic and/or abdominal truma has been totaly forgotten, resulting fals diagnosis of tension pneumothorax in one. In 3 others the diaphragmatic tear was missed during the previous laparotomy in one or considered as a hiatal hernia in the second and a really recurrent hernia was confused with a posttraumatic diaphragmatic palsy in the third. A subgroup of this entity, the two-steps ruture of one patient, may considered as a life-threatening urgency, when early approach is mandatory. In this series for diaphragmatic reconstruction in dominantly left-sided rutures (10) a similar sided postreolateral thoracotomy were used, and right-sided in the remaing 2, buttressed in only one, without mortality and recurrence.The delay of diagnosis may considered as the primordial factor of mortality. Even in long-lasting occult cases all efforts are necessary to solve the diagnostic dilemma, befor fatal visceral strangulation, befor development of feco-pneumothorax, gastric necrosis or tension pneumothorax. Suspition of the thoracoabdominal trauma may consisered as an important factor of true diagnosis and for pervention of iatrogenic surgical events. so transthoracic approach for diaphragmatic repair seems to be the best approach [16]. This series like other lage series reflects that delayed recognition of diaphragmatic rupture [17,18] may be considered as primordial factor of mortality.
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