Fig. 1

Left image: a dog showing the typical cervical swelling associated with a cervical abscess

Right image: A transverse CT image at the level of the C1 vertebra showing typical findings of a cervical abscess including non-contrast enhancing fluid-attenuating pocket (*) surrounded by a contrast-enhancing periphery. Gas is present within the abscess (black arrowhead). The abscess is causing deviation of the trachea to the left side of the neck