J Menopausal Med.  2015 Dec;21(3):149-154. 10.6118/jmm.2015.21.3.149.

Diagnostic Usefulness of Transrectal Ultrasound Compared with Transvaginal Ultrasound Assessment in Young Korean Women with Polycystic Ovary Syndrome

• Lee DE
• Park SY
• Lee SR
• Jeong K
• Chung HW

• KMID: 2200966
• DOI: http://doi.org/10.6118/jmm.2015.21.3.149

Abstract

OBJECTIVES
To determine the diagnostic performance of transrectal ultrasound in virgin patients with polycystic ovary syndrome (PCOS) by receiver operating characteristic (ROC) curve analysis, compared with conventional transvaginal ultrasound assessment.
METHODS
Ultrasound examinations were performed in 963 Korean women, with transvaginal transducers in 677 women and transrectal transducers in 286 women at Ewha Womans University Mokdong Hospital. Transvaginal ultrasound examinations were performed in 494 normal control women and 183 PCOS patients according to National Institutes of Health (NIH) PCOS diagnostic criteria. In virgin patients, transrectal ultrasound examinations were performed in 141 normal control women and 145 PCOS patients. ROC curves were calculated for ovarian volume and follicle number.
RESULTS
By transvaginal ultrasound examination, the ovarian volume showed an area under the ROC curve (AURC) of 0.838. An ovarian volume decision threshold > 7 cm3 had a sensitivity of 73.0% and a specificity of 84.2% for the diagnosis of PCOS. The follicle number showed an AURC of 0.886. A follicle number decision threshold > or = 9 had a sensitivity of 78.6% and a specificity of 87.2% for the diagnosis of PCOS. By transrectal ultrasound examination, the ovarian volume and the follicle number showed AURCs of 0.815 as same thresholds with a sensitivity of 67.2% and 66.4%, respectively and a specificity of 86.8% each. Ovarian volume and follicle number by transvaginal and transrectal ultrasound assessment had a high diagnostic power for PCOS screening.
CONCLUSION
Transrectal ultrasound assessment is as effective as conventional transvaginal ultrasound for the detection of PCOS in virgin patients.

Keyword

Polycystic ovary syndrome; Transrectal ultrasonography; Transvaginal ultrasonography

MeSH Terms

Diagnosis
Female
Humans
Mass Screening
National Institutes of Health (U.S.)
Polycystic Ovary Syndrome*
ROC Curve
Sensitivity and Specificity
Transducers
Ultrasonography*

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