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Ultrasound Can Effectively Predict Ovarian Cancer and Prevent Unnecessary Surgery

By MedImaging International staff writers
Posted on 24 Mar 2022
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Image: Appearance of ovarian lesions on ultrasound is an effective predictor of cancer risk (Photo courtesy of Unsplash)
Image: Appearance of ovarian lesions on ultrasound is an effective predictor of cancer risk (Photo courtesy of Unsplash)

Ovarian cancer is the deadliest of the gynecologic cancers. Characterization of adnexal lesions, or lumps near the uterus, on ultrasound examination is crucial for appropriate patient management, as some adnexal lesions can progress to cancer, while many others are benign and do not require treatment. Current risk stratification systems perform well, but their multiple sub-categories and multifaceted approach may make them difficult for radiologists in busy clinical practices to master. According to a new study, the appearance of ovarian lesions on ultrasound is an effective predictor of cancer risk that can help women avoid unnecessary surgery.

In the new study, researchers at the University of Rochester Medical Center (Rochester, NY, USA) assessed a method that uses ultrasound images to classify adnexal lesions into one of two categories: classic or non-classic. Classic lesions are the commonly detected ones such as fluid-filled cysts that carry a very low risk of malignancy. Non-classic lesions include lesions with a solid component and blood flow detected on Doppler ultrasound. A classic versus non-classic approach to these lesions could help radiologists in a busy clinical practice more quickly assess a lesion.

The researchers looked at 970 isolated adnexal lesions in 878 women, mean age 42 years, at average risk of ovarian cancer, meaning they had no family history or genetic markers linked with the disease. Of the 970 lesions, 53 (6%) were malignant. The classic versus non-classic ultrasound-based categorization approach achieved a sensitivity of 92.5% and a specificity of 73.1% for diagnosing malignancy in ovarian cancer. The frequency of malignancy was less than 1% in lesions with classic ultrasound features. In contrast, lesions that had a solid component with blood flow had a malignancy frequency of 32% in the overall study group and 50% in study participants who were more than 60 years old.

When a classic benign lesion is encountered, patients may be reassured a benign lesion is present, avoiding extensive further work-up. If additional research supports the study findings, then the system could end up being a useful tool for radiologists that would spare many women the costs, stress and complications of surgery. While these findings on diagnostic ultrasound exams offer valuable triaging information, ultrasound has not been proven beneficial specifically as a screening exam for ovarian cancer.

"If you have something that follows the classic imaging patterns described for these lesions, then the risk of cancer is really low," said study lead author Akshya Gupta, M.D., from the University of Rochester Medical Center. "If you have something that's not classic in appearance, then the presence of solid components and particularly the presence of Doppler blood flow is really what drives the risk of malignancy."

"Ultimately, we're hoping that by using the ultrasound features we can triage which patients need follow-up imaging with ultrasound or MRI and which patients should be referred to surgery," Dr. Gupta said.

Related Links:
University of Rochester Medical Center 


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