Unusual popleteal mass.
D003937:Diagnosis, Differential; D005260:Female; D006406:Hematoma / Q000175:diagnosis*; D006801:Humans; D007592:Joint Diseases / Q000175:diagnosis; D007719:Knee Joint; D008875:Middle Aged; D011152:Popliteal Vein; D013581:Synovial Cyst / Q000175:diagnosis; D013927:Thrombosis / Q000175:diagnosis