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Extraparenchymal ovarian and testicular Leydig cells: ectopic/heterotopic or orthotopic?

  • Gynecologic Endocrinology and Reproductive Medicine
  • Published:
Archives of Gynecology and Obstetrics Aims and scope Submit manuscript

Abstract

Purpose

We are conducting a prospective study trying to determine, in both sexes, the frequency of appearance of ectopic Leydig cells, their preferred location, their relationship with nerve structures and the possible causes of their appearance.

Methods

We have studied 86 cases that were removed according to different clinical indications for pathological study: uterine leyomiomas (n = 12), ovarian cystadenoma (n = 4), endometrial hyperplasia (n = 8), endometrial carcinoma (n = 12), cervical carcinoma (n = 4), seminoma (n = 4), fallopian tube ligatures (n = 24), vasectomies (n = 8), nonspecific orchiepididymitis (n = 2), and unknown (n = 8).

Results

We have observed ectopic Leydig cells in 13/86 cases (15.11%), 9/72 in the female samples (12.50%) and 4/14 in male samples (28.57%). The most frequent location was the mesosalpinx (4 of 13: 30.76%).

Conclusions

These high figures lead us to believe that the ectopia of Leydig cells is not really a pathologic entity, but a finding related to specific functions yet to be determined.

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(Adapted from Langman J. Medical embryology and human development-normal and abnormal, 2nd ed. Williams & Wilkins, Baltimore, 1969, pp 169)

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Acknowledgements

The authors would like to thank Patrick Dennis for revising the English language in this manuscript. This work has been possible thanks to the existing research agreement between the University of La Laguna and the Clinical Laboratory Dr. Gonzalez Santiago (CI02020401).

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Authors and Affiliations

Authors

Contributions

JLC: project development, data collection, manuscript writing. HÁ: project development, data collection, manuscript writing. CM: project development, manuscript writing. RG: project development, manuscript writing. AV: project development, data collection. IE: project development, data collection. RM: project development, data collection. LD: project development, data collection, manuscript writing.

Corresponding author

Correspondence to José L. Carrasco-Juan.

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Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The Institutional Ethics Committee of the University of La Laguna approved this study (CEIBA2018-0289).

Informed consent

Additional informed consent was not required since our standard hospital consent form for surgical or other procedure specifically states that “I understand that the Hospital may use for teaching or scientific purposes, or may otherwise dispose of, tissues, fluids or organs removed during the procedure”.

Conflict of interest

The authors declare that they have no conflict of interest.

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Carrasco-Juan, J.L., Álvarez-Argüelles-Cabrera, H., Martín-Corriente, C. et al. Extraparenchymal ovarian and testicular Leydig cells: ectopic/heterotopic or orthotopic?. Arch Gynecol Obstet 298, 655–661 (2018). https://doi.org/10.1007/s00404-018-4846-x

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  • DOI: https://doi.org/10.1007/s00404-018-4846-x

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