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Asgari, Z., Hosseini, R., Sepidarkish, M., & Nabati, A. (2022). Accuracy of transvaginal and transrectal ultrasounds in the diagnosis of endometriosis: A retrospective cohort study. International Journal of Reproductive BioMedicine (IJRM), 20(5), 365-376. https://doi.org/10.18502/ijrm.v20i5.11051

https://doi.org/10.18502/ijrm.v20i5.11051

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authors

  • Zahra Asgari

    Zahra Asgari

    Department of Obstetrics and Gynecology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
  • Reihaneh Hosseini

    Reihaneh Hosseini

    Department of Obstetrics and Gynecology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
  • Mahdi Sepidarkish

    Mahdi Sepidarkish

    Infertility and Reproductive Health Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran.
  • Azar Nabati

    Azar Nabati

    Department of Obstetrics and Gynecology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.

Published Date

  • Jun 8, 2022

Accuracy of transvaginal and transrectal ultrasounds in the diagnosis of endometriosis: A retrospective cohort study

International Journal of Reproductive BioMedicine (IJRM) / International Journal of Reproductive BioMedicine (IJRM): Volume 20, Issue No. 5 / Pages 365-376

Abstract

Background: Early diagnosis and appropriate treatment of endometriosis are vital and may prevent subsequent complications.


Objective: To investigate the diagnostic accuracy of transvaginal ultrasound sonography (TVUS) and transrectal ultrasound sonography for detecting endometriosis considering the age and body mass index (BMI).


Materials and Methods: This was a retrospective cohort study of 119 women scheduled for surgery in a tertiary health care center for clinically suspected endometriosis. Married and virgin women underwent TVUS and transrectal ultrasound sonography, respectively, before laparoscopic excision of endometriotic lesions.


Results: The accuracy of TVUS in the diagnosis of right endometrioma in women with a normal BMI was superior to that in women with a BMI ≥ 30 (95.6% vs. 75.3%; p < 0.001). For the detection of left endometrioma in women with a normal BMI, TVUS demonstrated a sensitivity of 96.9% and a negative predictive value of 92.9%, which was significantly superior to TVUS in women with obesity (sensitivity: 77.4%, negative predictive value: 58.6%). The accuracy of TVUS in the diagnosis of left endometrioma in women under 35 yr was superior to that in women older than 35 yr (93.2% vs. 77.9%; p = 0.04). Similarly, the accuracy of TVUS in the diagnosis of right endometrioma in women under 35 yr was superior to TVUS in women older than 35 yr (86.5% vs. 73.3%; p = 0.04).


Conclusion: Ultrasound can be a useful technique for detecting endometriosis when used adjunctively with the patient’s history and physical findings, especially age and BMI.


Key words: Endometriosis, Ultrasonography, Diagnostic imaging, Body mass index.

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