Assertion: gangrene's appearance | /r/CreatedBy | hyperechoic foci
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text: Acoustic shadowing of subcutaneous gas secondary to bacteria may result in a “snow globe” or “dirty shadowing” appearance caused by hyperechoic foci demonstrating reverberation artifacts (Figure 3).60 While POCUS has been shown to be highly specific for NSTIs (up to 93%), it is insufficiently sensitive (approximately 88%) to exclude a diagnosis with such a high morbidity and mortality.61,62