Page 553 - Atlas of Small Animal CT and MRI

Figure 5.4.5 Gastritis (Canine) CT

6y MC Shetland Sheepdog with chronic
bicavitary effusion. There is focal, marked
thickening of the gastric wall in portal phase
(a) and delayed phase (b: arrows) images.
The rugal folds are thickened; however, wall
layering is not disrupted. A normal stomach
is included for comparison (c). Rugal thicken-
ing and nondistensibility of the stomach were
found on endoscopy (d). The biopsy diagnosis
was lymphoplasmacytic gastritis.

(a) CT+C, TP (b) CT+C, TP

(c) CT+C, TP (d) ES

Figure 5.4.6 Colitis (Canine) CT

7y MC Soft‐Coated Wheaten Terrier with 2‐
month history of tenesmus and hematochezia.
CT images are ordered from cranial to caudal.
The terminal portion of the colon and rectum
are fluid filled with a markedly thickened wall.
The rectal wall is asymmetrically thickened
near the anus (c: arrow), with partial obstruc-
tion of the lumen. Increased attenuation of
adjacent fat is present in the subcutaneous
tissue in this region, suggesting regional
inflammation (c: asterisk). The affected colonic
(a) CT+C, TP (b) CT+C, TP
tissues are uniformly and intensely contrast
enhancing. A colonoscopic image reveals
irregular mucosal lining consistent with an
annular mural lesion (d). Biopsy confirmed
chronic, diffuse lymphoplasmacytic and eosino-
philic colitis.

(c) CT+C, TP (d) ES
543