Click on image to view larger version.
Figure 15. Longitudinal section through the left parotid gland in a patient with acute parotitis secondary to Escherichia coli. The gland is enlarged and hypoechoic. Multiple hyperechoic foci are present within the gland (long arrow) which represent air within intraglandular ducts secondary to sepsis. Note associated comet-tail artefacts. The normal facial nerve can be identified as a fibrillar structure (curved open arrow) lying lateral to the retro-mandibular vein.
