Gangrene is used to describe a severe medical emergency often requiring surgery. The patient was rushed into surgery due to gangrene.
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Not Contagious
Unlike infections, gangrene isn't contagious but demands immediate treatment. Her wound led to gangrene, but her family wasn't at risk of catching it.
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Visual Cues
The term implies visual changes in the tissue such as blackening or discolouration. The dark color of his toes was a clear sign of gangrene setting in.