Editing Necrotizing fasciitis (section)

==== Plain radiography (X-ray) ====
It is difficult to distinguish NF from cellulitis in earlier stages of the disease using plain radiography.<ref name=":0" /> X-rays can detect subcutaneous emphysema (gas in the [[subcutaneous tissue]]), which is strongly suggestive of necrotizing changes. However, air is often a late-stage finding, and not all necrotizing skin infections create subcutaneous emphysema. Hence, radiography is not recommended for the initial diagnosis of NF.<ref name=":0" /> However, it may be able to identify the source of infection, such as foreign bodies or fractures, and thus aid in subsequent treatment.<ref name=":0" />