Fig. 1

Computed tomographic images pre- and post-prednisolone treatment in a dog with granulomatous myositis and neuritis. Transverse computed tomographic (CT) images using a soft tissue algorithm, prior to prednisolone treatment (a, c) and at a revisit 17 months later (b, d). Transverse CT images at the level of the caudal aspect of L7 (a, b) and at the level of the intervertebral space between L1 and L2 (c, d). Atrophy of the right medial gluteal muscle (arrow) and iliopsoas (arrowhead) (a, b). Atrophy of the right longissimus thoracic, longissimus lumborum, multifidus lumborum and iliocostal lumborum muscles (arrow) (c, d). The muscle atrophy appears unchanged when comparing the two studies. There is moderately to markedly increased body habitus, predominantly subcutaneous fat (asterisk), at the revisit (b, d) compared to the first study (a, c)