Necrotizing soft tissue infections Quiz: Ace Your Exams

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A 57-year-old woman presents to the emergency department for evaluation of worsening right foot pain and swelling over 1 day. The patient is unable to ambulate on the right foot due to pain. The patient has a past medical history of type 2 diabetes mellitus managed with insulin, hypertension, hyperlipidemia, and a chronic diabetic foot ulcer over the plantar aspect of the foot. Temperature is 39°C (102.2°F), blood pressure is 110/60 mmHg, pulse is 105/min, respiratory rate is 19/min, and oxygen saturation is 95% on room air. The patient appears uncomfortable. Examination of the right foot demonstrates erythema, edema, and induration over the entire foot and foul-smelling discharge from an ulcer present over the plantar aspect of the foot. The patient is started on IV fluids and broad-spectrum antibiotics. Labs are ordered and pending. Radiograph of the right foot is shown below. Which of the following examination findings is most likely to be present?  



Reproduced from: Wikipedia 

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