Signalment: 8 month old MN Beagle

Radiologist's Description: The segment of intestine within the near field represents a normally empty and contracted colon. The colonic wall is significantly thicker when empty and delineation between wall layers is obvious. The noted subtle corrugation is a common feature of the colon in an empty state. The segment of intestine within the far field represents a normal segment of small bowel. The wall layers of both colon (near field) and small intestine (far field) are easily identified as follows indicated by the respective arrows smallest to largest: serosa (thin, hyperechoic), muscularis (thin, hypoechoic), submucosa (thin, hyperechoic), mucosa (thick, hypoechoic in small intestine; thin and layered in the colon). Notice the difference between the thick mucosal layer and thin submucosal, muscularis and serosal layers. The superficial 3 layers should represent approximately 30% of total wall thickness.

Definitive Diagnosis: Normal empty colon and small intestine.