Fig. 2

Coronal views of enhanced bilateral magnetic resonance imaging T2 image of hips (a) and legs (b). Muscular edema of vastus intermedius, vastus lateralis, mid rectus femoris, abductor magnus, abductor brevis, gracilis, and gastrocnemius associated with extensive multi-compartmental fascial edema bilaterally. No rim-enhancing collections or gas were noted. c Histologic image of necrotic muscle with associated loss of nuclei and striations. There are dense aggregations of bacteria infiltrating the muscle with no associated inflammatory response. Inset shows normal viable muscle for comparison. d Gram stain with numerous gram-negative bacilli, consistent with Aeromonas hydrophila