A sonographic classification of adenomyosis: interobserver reproducibility in the evaluation of type and degree of the myometrial involvement

This standardized adenomyosis mapping system is reproducible and could be useful in clinical practice to evaluate the extension of the disease.

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Volume 110, Issue 6, Pages 1154–1161.e3

Authors:

Lucia Lazzeri, M.D., Ph.D., Giulia Morosetti, M.D., Gabriele Centini, M.D., Ph.D., Giorgia Monti, M.D., Errico Zupi, M.D., Emilio Piccione, M.D., Caterina Exacoustos, M.D., Ph.D.

Abstract:

Objective

To study the interobserver reproducibility of our new ultrasonographic mapping system to define the type and extension of uterine adenomyosis.

Design

Interobserver study involving two observers with different medical backgrounds and gynecological ultrasound experience.

Setting

University hospital.

Patients

Seventy consecutive women who underwent transvaginal ultrasound for suspected endometriosis, pelvic pain, heavy menstrual bleeding, and infertility.

Intervention

Two operators (observers A and B), who were blinded, independently reviewed the ultrasound videos offline, assessing the type of adenomyosis and the severity of the disease. Diagnosis of adenomyosis was made when typical ultrasonographic features of the disease were observed at the examination. Adenomyosis was defined as diffuse, focal, and adenomyoma according to the ultrasonographic characteristics. The severity of adenomyosis was described using a new schematic scoring system that describes the extension of the disease considering all possible ultrasound adenomyosis features.

Main Outcome Measures

Reproducibility of the new mapping system for adenomyosis and rate agreement between two operators.

Results

Multiple rate agreements to classify the different features and the score of adenomyosis (diffuse, focal adenomyoma, and focal or diffuse alteration of junctional zone) ranged from substantial to almost perfect (Cohen κ = 0.658 – 1) except for adenomyoma score 4 (one or more adenomyomas with the largest diameter >40 mm) in which interobserver agreement was moderate (κ = 0.479).

Conclusion

Our new scoring system for uterine adenomyosis is reproducible and could be useful in clinical practice. The standardization of the transvaginal approach and of the sonographer training represent a crucial point for a correct diagnosis of myometrial disease.


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Fertility and Sterility

Editorial Office, American Society for Reproductive Medicine

Fertility and Sterility® is an international journal for obstetricians, gynecologists, reproductive endocrinologists, urologists, basic scientists and others who treat and investigate problems of infertility and human reproductive disorders. The journal publishes juried original scientific articles in clinical and laboratory research relevant to reproductive endocrinology, urology, andrology, physiology, immunology, genetics, contraception, and menopause. Fertility and Sterility® encourages and supports meaningful basic and clinical research, and facilitates and promotes excellence in professional education, in the field of reproductive medicine.

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