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Updated: Oct 21, 2025

Generation of Multicellular Human Primary Endometrial Organoids
Published on: October 4, 2019
Estrogen and progesterone receptors in endometriosis
Luiz R Guimarães Ferreira1, Teresa Cavalcanti2, Monica Zomer3
1Department of Obstetrics and Gynecology, Federal University of Paraná (UFPR), Curitiba, Brazil.
Background:
This study aims to identify the presence of estrogen and progesterone hormone receptors in endometriosis implants and to determine whether hormone treatment influences the receptors in these implants.
Methods:
Cross-sectional study with historical data collection. The analysis was conducted on 156 endometriosis implants from 67 patients undergoing endometriosis laparoscopy. The patients were divided into two groups: one group underwent hormone treatment (N.=20) and another group did not receive hormone treatment (N.=47) prior to surgery. Women of reproductive age with clinical pain and/or infertility who were diagnosed with endometriosis and underwent surgery were included. The specimens were analyzed after the estrogen and progesterone hormone receptors underwent immunohistochemistry.
Results:
All analyzed topographies presented estrogen and progesterone hormone receptors. Progesterone hormone receptor expression was considerably superior to estrogen receptor expression (P<0.001).
Conclusions:
Hormone receptors are present in endometriosis implants on the ovarian fossae, uterosacral ligaments, sac fundus, and ovaries. Progesterone receptors predominate in implants, regardless of hormonal treatment.
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