Pelvic Ultrasound Indication for Heavy Painful Periods
Write "abnormal uterine bleeding" as the indication on the pelvic ultrasound requisition for a patient with heavy, painful periods.
Recommended Imaging Study
The American College of Radiology (ACR) establishes that combined transabdominal and transvaginal ultrasound of the pelvis with Doppler is the most appropriate initial imaging study for patients presenting with abnormal uterine bleeding 1. This is the standard first-line imaging approach regardless of whether the patient is premenopausal or postmenopausal 2.
Why "Abnormal Uterine Bleeding" is the Correct Indication
Heavy, painful periods fall under the clinical umbrella term "abnormal uterine bleeding" (AUB), which is the standardized terminology used in imaging guidelines and appropriateness criteria 1.
Using this specific indication ensures the radiologist understands the clinical context and performs the appropriate comprehensive evaluation 1.
The term "abnormal uterine bleeding" triggers the radiologist to assess for all relevant structural pathologies including polyps, adenomyosis, leiomyomas (fibroids), endometrial hyperplasia, and malignancy 2.
What the Ultrasound Will Evaluate
The transvaginal ultrasound component is essential because it provides high-resolution images of pelvic organs and can diagnose:
- Structural causes: Endometrial polyps, submucosal fibroids, adenomyosis, and uterine malformations 2
- Endometrial assessment: Thickness and texture to evaluate for hyperplasia or malignancy 1
- Ovarian pathology: Ovarian cysts, endometriomas, or masses that may contribute to symptoms 2
- Signs of endometriosis: Including endometriomas and deep infiltrating disease, which commonly presents with painful periods 3
Common Pitfall to Avoid
Do not write vague indications like "pelvic pain" or "menorrhagia" alone. While these describe the symptoms, "abnormal uterine bleeding" is the comprehensive diagnostic category that directs appropriate imaging protocols and ensures the radiologist evaluates all potential etiologies 1. The ACR Appropriateness Criteria specifically address "abnormal uterine bleeding" as the clinical scenario requiring this imaging approach 1.
If Initial Ultrasound is Inconclusive
Should the uterus be incompletely visualized on the initial ultrasound, MRI of the pelvis without and with contrast becomes the next appropriate study 1. If a polyp is suspected on the original ultrasound, sonohysterography (saline infusion sonography) can be performed to better characterize focal endometrial abnormalities 1.