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Bulge Behind the Knee

Poll

No labs, no biopsies, no imaging -- only your seasoned clinical judgement is required to make a diagnosis in this case.

No labs, no biopsies . . .  you can make this Doorway Diagnosis just by looking.

Pictured is the posterior right knee of a 69-year-old woman showing a rounded protuberance at the popliteal fossa.

 

Based on what you see, what is your diagnosis?

A. Tumor posterior knee soft tissue
B. Hematoma posterior knee
C. Inflammatory arthritis
D. Baker cyst
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