Figure 2.
(a) After antimicrobial treatment, there was progressive swelling of right knee extended downward to the calf area, (b, c) ultrasonography of right leg discovered large space of air-filled, heterogeneous multiloculated peri- and intramuscular abscesses, sized 5.4 × 8.6 × 17 centimeters in diameter, extended from popliteal area to ankle level.