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ASHEVILLE, N.C. -- Ultrasound is usually the best imaging study for diagnosis of adnexal masses and is able to predict malignancy around 90% of the time, Dr. Samuel Lentz said at the annual Southern Obstetrics and Gynecology seminar.
MRI and computed tomography are more invasive, don't provide additional useful information in differentiating benign from malignant masses, and just drive up the cost, said Dr. Lentz of East Carolina University, Greenville, N.C.
"Sometimes they get an ultrasound, and then a CT is recommended. And they get that, and an MRI is recommended. And at the end of the day you end up managing the patient based on your clinical evaluation, and all you've managed to do is drive up the cost," he said.
The MRI and CT scans can be useful in evaluating adjacent structures and identifying any metastatic disease that may be present.
"Recent studies have suggested that CT scans can also predict whether the patient can have an adequate cytoreduction," he said.
Positron emission tomography has very little place in diagnosing these masses, he noted.
"PET scans may have some limited utility in determining recurrence of ovarian cancer, but a recent German study concluded that it's a very poor tool for predicting malignancy."
Source: HighBeam Research, Ultrasound best for adnexal masses diagnosis.(Gynecology)