Presentation
Adult male with incidental finding on color doppler study of lower limb.
Patient Data
Age: 40 years
Gender: Male
From the case:
Baker's cyst - speech bubble sign
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Info

Classic 'speech bubble' or 'talk bubble' appearance seen in a case of Baker's cyst of knee. It is demonstrated by a well-defined cystic lesion in the popliteal fossa with a narrow 'neck' extending between the medial head of gastrocnemius and semimembranosus tendon.
Case Discussion
Baker's cyst is one of the most commonly encountered cystic lesions in the popliteal fossa.