PMC3573814_01
Ultrasound image of the proximal gastrocnemius muscles in the axial plane: collection with hyper- and hypoechoic areas (arrows), suggesting abscess formation.
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F1
Venous duplex ultrasonography excluded deep venous thrombosis but demonstrated hyperechoic areas within the muscles (fig. 1).
Ultrasound image of an 18-gauge Chiba  puncture needle within the proximal gastrocnemius muscles in the axial plane. Ultrasonography-guided puncture of the abscess was followed by insertion of an 8F-pigtail catheter to drain the collection. This procedure was performed in both legs.
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F2
The abscesses were punctured and drained with a pigtail catheter under the guidance of ultrasonography (fig. 2, fig. 3).