異時両側気胸の臨床経過に関する検討

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  • A Clinical Study on Bilateral Spontaneous Pneumothorax.

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To study whether a correlation existed between initial and contralateral spontaneous pneumothorax (SP) in metachronous bilateral SP, we studied 47 of 48 patients with metachronous bilateral SP treated at our hospital from 1995 to 2000. One patient was omitted because of secondary SP due to Marfan's syndrome.<br> The incidence of bilateral SP was 2.3% for simultaneous and 13.6% for metachronous bilateral SP. The age distribution for the first initial SP episode in metachronous bilateral SP was younger than in all SP, but that for the first contralateral SP episode was very similar to that for all SP.<br> The mean interval between initial and contralateral SP was 82.7 months in surgically treated cases for initial SP and 43.4 months in nonsurgical cases. Of the 47.34 (72.3%) developed contralateral SP after only l episode of initial SP without recurrence and 18 (38.3%) underwent surgery for initial SP, although 63.3% of patient with SP were treated surgically in this period.<br> We found no correlation between initial and contralateral SP and left and right SP appear to be independent in metachronous bilateral SP. Metachronous bilateral SP is therefore not an operative indication for bilateral one-stage surgery.

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