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Subcutaneous cervicofacial and mediastinal emphysema (SCFME)volve a passive escape of air from the aerodigestive tract into subcutaneous tissues. Even if the presence of SCFME is not in itself dangerous, prompt recognition of the underlying etiology is esential. Catheterization is a comon procedure in the otolaryngologic field, but, clinically, SCFME after catheterization is very rare. Recently, we experienced a case of SCFME after catheterization, so we report this rare case with a review of literatures. (Korean J Otolaryngol 2002;45:300-2)