Subcutaneous emphysema of the lower extremity. A case report.

The case presented is a rare example of subcutaneous emphysema isolated to an extremity. This is a benign condition and should not be confused with necrotizing gas-producing infections. In most cases, the condition rapidly resolves without treatment, usually in less than 48 hr. In rare cases where the mechanical process causing the subcutaneous emphysema persists, interruption of this process is required.