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Transvaginal US appearance of endometrial abnormalities
M Atri1, S Nazarnia, A E Aldis
1Department of Diagnostic Radiology, Montreal General Hospital, Quebec, Canada.
Summary
Transvaginal ultrasound (US) aids in evaluating endometrial abnormalities before hysterectomy. While cystic changes often indicate benign conditions, malignancy can present with overlapping features, necessitating careful interpretation.
Area of Science:
- Gynecologic Imaging
- Diagnostic Ultrasound
- Pathology
Background:
- Endometrial abnormalities require accurate preoperative assessment.
- Transvaginal ultrasound (US) is a key imaging modality for evaluating the endometrium.
- Differentiating benign from malignant endometrial conditions preoperatively can be challenging.
Purpose of the Study:
- To evaluate the effectiveness of transvaginal US in characterizing endometrial abnormalities.
- To identify US features that differentiate benign endometrial conditions from malignancy.
- To assess the overlap in US findings between benign and malignant endometrial pathologies.
Main Methods:
- Retrospective analysis of 44 patients undergoing transvaginal US prior to hysterectomy.
- Correlation of US findings with surgical pathology results.
- Evaluation of endometrial thickness, echogenicity, contour regularity, and cystic changes.
Main Results:
- Cystic changes were present in 76% of benign conditions and 24% of malignancies.
- A poorly defined endometrial contour was common in malignancies (majority), but 40% had well-defined thickening.
- Endometrial carcinomas were typically echogenic (88%) or isoechoic (12%), with none being purely hypoechoic.
Conclusions:
- Transvaginal US plays a significant role in endometrial assessment.
- While cystic changes suggest benignity, malignancy cannot be excluded.
- A poorly defined, irregular endometrium on US warrants consideration of malignancy.