Necrotizing fasciitis

Necrotizing fasciitis is a rapidly progressing, life-threatening soft tissue infection. Surgical treatment consists of wide debridement of skin, subcutaneous tissue, fascia, and any necrotic muscle.
(A) Necrotizing fasciitis in an immune-compromised older adult patient. Note that the proximal extent of the erythema has been marked with an indelible marker.
(B) Necrotizing fasciitis of the upper extremity. Left: Preoperative appearance. Center: Intraoperative appearance. Arrow shows the bubbly purulent material. Right: Result after multiple debridements.