• M Tamaki, K Yoshizawa, K Okumura, and K Miura.
• Department of Chest Surgery, Takamatsu Red-cross Hospital, Takamatsu, Japan.
• Kyobu Geka. 2009 Nov 1; 62 (12): 1093-6.

AbstractA 31-year-old female with 2 episodes of right pneumothorax related to onset of menstruation was reported. Thoracoscopy revealed the presence of some cystic lesions in the diaphragm. Partial resection of the diaphragm including the lesions was performed. Histologial findings of the resected diaphragm showed stromal endometriosis. One month after operation, she had a recurrent right pneumothorax related to onset of menstruation. A pinhole perforation of the lower lobe was noted at 2nd surgery. Microscopic examination of the resected lung disclosed endometrial stroma in the macroscopically normal lung tissue. Since air leakage from chest tube continued after surgery, the hormonal therapy with a gonadotropin-releasing hormone analogue was started, and she was discharged from the hospital 3 weeks after hormonal therapy. Report of the demonstration of endmetriosis in the visceral pleura and diaphragm is very rare and the present case is very suggestive is considering the mechanism of the development of this disease.

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