Fig. 2

Point-of-care ultrasound scan of the affected left gluteal soft tissue (a) and normal soft tissue on the contralateral side (b) using a 15–6 MHz linear probe. In the affected tissue, there is loss of the normal subcutaneous architecture, diffuse increased echogenicity, hypoechoic regions that correspond to little fluid accumulations (arrow) and an hyperechoic focus with posterior dirty acoustic shadowing, corresponding to gas in the soft tissue (arrowhead)