Case report: catamenial pneumothorax

Shawn Zhenhui Lee, Mohammed Tousif Syed, Pranav Kumar
In: International Journal of Medical Science and Clinical invention · 2019 · vol. 6(09) , pp. 4604–4607 · doi:10.18535/ijmsci/v6i9.07 · W2973209806
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⚙ AI-generated summary by claude@2026-06, 2026-06-07 ⓘ

This case report discusses catamenial pneumothorax, an uncommon cause of secondary spontaneous pneumothorax associated with thoracic endometriosis, characterized by recurrent pneumothorax during menstruation.

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⚙ AI-generated deep summary by claude@2026-06, 2026-06-07 · read from full text ⓘ

This case report describes primary spontaneous pneumothorax in a context where recurrence occurs in temporal relation to menstruation, defining the phenomenon as catamenial pneumothorax. It frames catamenial pneumothorax as an uncommon secondary cause of spontaneous pneumothorax in women, associated with thoracic endometriosis, and provides background on how catamenial refers to monthly recurrence. The major limitation is that, as a single case report, it does not establish broader prevalence, mechanisms, or treatment outcomes beyond the individual presented scenario. This paper is centrally about endometriosis — it discusses catamenial pneumothorax as being associated with thoracic endometriosis.

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Abstract

Primary spontaneous pneumothorax is defined as the presence of air in the pleural space with no precipitating cause and is four times less likely to occur in women than in men1,2. Common causes for spontaneous pneumothorax in females include: interstitial pneumonia, primary lung cancer and lung metastasis, and asthma3. An uncommon cause for secondary spontaneous pneumothorax is catamenial pneumothorax, which is associated with thoracic endometriosis. The word “catamenial” is derived from the greek word “katamenios” meaning monthly recurrence.4 Catamenial pneumothorax refers to recurrent spontaneous pneumothorax during menstruation in the absence of concomitant respiratory disease5.
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Abstract Primary spontaneous pneumothorax is defined as the presence of air in the pleural space with no precipitating cause and is four times less likely to occur in women than in men1,2. Common causes for spontaneous pneumothorax in females include: interstitial pneumonia, primary lung cancer and lung metastasis, and asthma3. An uncommon cause for secondary spontaneous pneumothorax is catamenial pneumothorax, which is associated with thoracic endometriosis. The word “catamenial” is derived from the greek word “katamenios” meaning monthly recurrence.4 Catamenial pneumothorax refers to recurrent spontaneous pneumothorax during menstruation in the absence of concomitant respiratory disease5.

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endometriosisthoracic_endometriosis

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