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[Value of ultrasonic diagnosis of popliteal cysts].

Ultrasonography of the knee joints in 55 patients with rheumatoid arthritis permitted diagnosing of popliteal cysts in 14 of them including 7 patients without any clinical symptoms. The method permitted measurements of cyst size and assessment of cysts before and after therapy. Ultrasonic B-scanning is a non-invasive, informative and reliable technique for the detection and assessment of popliteal cysts.