Ultrasound for diagnosing acute salpingitis: a prospective observational diagnostic study

Area of Science:

• Gynecologic imaging
• Diagnostic accuracy of medical imaging
• Pelvic inflammatory disease diagnosis

Background:

• Pelvic inflammatory disease (PID) diagnosis is challenging due to subtle symptoms and non-specific clinical findings.
• Previous ultrasound studies for salpingitis often focused on severe cases like pyosalpinx or tubo-ovarian abscess.

Purpose of the Study:

• To evaluate the diagnostic benefits of ultrasound in patients with suspected acute salpingitis and signs of PID.
• To determine the accuracy of transvaginal ultrasound in identifying salpingitis compared to laparoscopy.

Main Methods:

• A diagnostic test study involving 52 patients with clinical criteria for PID.
• Standardized transvaginal grayscale and Doppler ultrasound (index test) followed by diagnostic laparoscopy (reference standard).

Main Results:

• Ultrasound detected bilateral adnexal masses in 82% of salpingitis cases versus 17% of other diagnoses (P=0.000).
• The absence of bilateral adnexal masses decreased salpingitis odds by fivefold; presence increased odds fivefold.
• Ultrasound achieved 100% detection for moderate-to-severe salpingitis but was less precise for mild cases.

Conclusions:

• Transvaginal ultrasound provides valuable information for managing suspected PID, aiding decisions on diagnostic laparoscopy, treatment selection, and follow-up.
• The study highlights the utility of identifying adnexal masses via ultrasound in diagnosing acute salpingitis.
• Limitations include a small sample size and challenges in recruiting patients, particularly those with mild salpingitis.