Figure 1.

Thoracic CT scan: A CT scan using intravenous contrast shows an abscess (allow head: △) around the left SCJ (A and B). The abscess is compartmental structure. The rim of the mass is slightly enhanced, but the center of the abscess is not enhanced. The abscess extends to the left sternocleidomastoid muscle (A) and retrosternal region (C).

Shioya et al. BMC Emergency Medicine 2012 12:7   doi:10.1186/1471-227X-12-7
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