Clinical Study of Catamenial Pneumothorax / 日本農村医学会雑誌

ABSTRACT

　　Catamenial pneumothorax (CP) is defined as a form of thoracic endometriosis syndrome (TES) and the clinical manifestations and management of this disease are not consensual. Successful treatment depends on how closely pulmonary specialists and gynecologists work together. Such being the circumstances, we reviewed our experience with CP in terms of treatment and follow-up. We treated surgically many patients with pneumothorax during the period from 1989 to 2014, of which eight cases had endometriosis on the diaphragm, lung or pleura histologically. The median age at the time of operation was 37 (range, 17 to 41). CP was right-sided in seven of the eight patients (87.5%). Six patients underwent an examination with diagnostic laparoscopy and five had positive findings. The median period of follow-up after surgery was 33.5 months (range, 4 to 129 months). Two patients had no recurrence without hormonal therapy. Six other patients experienced a recurrence of pneumothorax, although two patients received dienogest after surgery. The use of only dienogest or both GnRHa and dienogest prevented recurrence in all patients. CP is a critical condition that requires prompt action, so after surgical treatment, the choice of hormonal therapy with a high rate of patient compliance are needed. No recurrence occurred in young patients who had only surgical treatment, suggesting that there were some associations between age and recurrence. Since we succeeded in preventing recurrence after using GnRHa in all cases, we recommend GnRHa or dienogest following GnRHa for the first choice of hormonal therapy after surgery. However, treatment with only dienogest could achieve successful results with no recurrence, so more case studies need to be done to make the best treatment choice for each case.