CC BY-NC-ND 4.0 · Thorac Cardiovasc Surg Rep 2022; 11(01): e67-e69
DOI: 10.1055/s-0042-1758115
Case Report: Thoracic

Spontaneous Recurrent Pneumothorax during Pregnancy Secondary to Ectopic Deciduosis

1   University of Colorado Anschutz School of Medicine, Aurora, CO
Morgan M. Sellers
2   Department of Surgery, Ernest E. Moore Shock Trauma Center at Denver Health, CO, USA
Alexander P. Morton
3   Division of GI, Trauma, and Endocrine Surgery, Department of Surgery, University of Colorado School of Medicine, Aurora, USA
4   Department of Surgery, Denver Health Medical Center, University of Colorado School of Medicine, Denver, Colorado
› Author Affiliations


Background Ectopic deciduosis is a benign presence of endometrial tissue outside of the uterus during pregnancy that rarely presents with pleuropulmonary manifestations and recurrent pneumothorax.

Case Description We report a 35-year-old woman at 15 weeks' gestation with a history of recurrent intrapartum right pneumothorax found to have pleural, pulmonary, and diaphragmatic lesions and a middle lobe air leak. Wedge resection of the middle lobe and mechanical pleurodesis was performed. Histopathological analysis was progesterone receptor and PAX8 positive consistent with ectopic deciduosis.

Conclusion Ectopic deciduosis is a rare cause of recurrent pneumothorax in pregnancy and should be considered when evaluating these patients.

Publication History

Received: 03 July 2022

Accepted: 25 July 2022

Article published online:
09 November 2022

© 2022. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany