OC12.05: Normal values for quantitative piriformis muscle and sacral nerves ultrasonography with gynecological transvaginal ultrasound.

This article, published in the journal Ultrasound in Obstetrics & Gynecology, discusses a study that aimed to investigate the feasibility of visualizing the piriformis muscle (PM) and the sacral nerves using gynecological transvaginal ultrasound (TVS). The study included 305 patients and found that the PM was visualized in 96.4% of cases on the right side and 96.0% on the left side, with median antero-posterior (AP) diameters of 18.3mm and 18.4mm, respectively. The sacral nerves (S1-S3) were visualized in 81.6% of cases on the right side and 81.0% on the left side, with median AP diameters of 4.8mm. The authors suggest that integrating the assessment of these structures into routine pelvic TVS may be beneficial for women with deep endometriosis. [Extracted from the article]