Ultrasound Diagnosis of Baker Cyst

BAKER cysts may dissect or rupture into the calf, producing a syndrome mimicking thrombophlebitis. Ultrasound B scan of the calf can demonstrate the cystic nature of this lesion and lead to correct diagnosis and treatment. Routine double-contrast arthrography was not done in our patient because of previous allergy to contrast medium. Ultrasound B scan is correlated with air arthrography and surgery. Report of a Case A 69-year-old asthmatic man was admitted to University Hospital on Nov 17, 1974, with the chief complaint of progressive right calf pain and swelling of six weeks' duration. In the previous year, he had had aching pain and recurrent swelling of the right knee. He denied a history of trauma or twisting injury to the knee but admitted to occasional painful clicking when he crossed his legs. Five weeks prior to admission, the knee joint was tapped, and a steroid preparation was injected, with temporary