Ultrasound of Pelvic Pain in the Nonpregnant Woman.

Pelvic ultrasound with endovaginal ultrasound is often the imaging test of choice in the initial evaluation of nonpregnant women with pelvic pain. This article considers the sonographic observations and techniques useful in diagnosis of a variety of gynecologic causes of pelvic pain in these women, including ovarian hemorrhage, ovarian torsion, pelvic inflammatory disease, endometriosis (particularly deeply infiltrating endometriosis), endometriomas, adenomyosis, pelvic congestion syndrome, and malpositioned intrauterine contraceptive devices. Sonographic observations regarding a number of non-gynecologic causes of pelvic pain are also described.