Diaphragmatic Endometriosis With Contiguous Lung and Liver Involvement

Kazuki Sato, Hirofumi Uehara, Masahiro Miyajima, 長津明久, Kato T
In: Annals of Thoracic Surgery Short Reports · 2026 · doi:10.1016/j.atssr.2026.07.030 · W7204249113
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This case report describes a patient with diaphragmatic endometriosis that exhibited contiguous involvement of the lung and liver tissues.

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Abstract

Diaphragmatic endometriosis is a rare extrapelvic condition that rarely affects adjacent organs. We report the case of a woman with a right diaphragmatic mass that exhibited a cyclic growth pattern: it regressed after menopause, regrew thereafter, remained radiologically stable during 2 years of dienogest therapy, and increased in size after treatment discontinuation. Computed tomography showed a 65-mm transdiaphragmatic mass involving the adjacent lung and liver tissues. As malignancy could not be excluded, combined thoracoscopic and laparoscopic en bloc resection was performed. Histopathology confirmed diaphragmatic endometriosis with contiguous lung and liver involvement. The patient remained recurrence-free for 2 years postoperatively.

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last seen: 2026-10-31T06:00:52.059595+00:00
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