Exam of the cranial abdomen demonstrated normal liver size, contour, and structure. Parenchymal echogenicity was naturally coarse and hypoechoic to the spleen. Vascular and biliary tracts were of normal volume and no evidence of congestion was noted. The gallbladder presented thin walls with normal, primarily anechoic content. The cystic and common bile ducts were normal. No periportal lymphadenopathy was evident. No overt structural evidence of inflammatory, infiltrative or regenerative pathology was noted. The gastrointestinal tract presented approximately 30-35 cm of jejunum that was diffusely thickened to a variable degree with loss of detail and regional hyperechoic, ill defined surrounding fat adhered to the serosa. This is consistent with spontaneous necrosis and inflammatory bowel or potential intestinal lymphoma. Loss of mural detail was noted in variable areas of the small intestine. The ileocecal valve, descending duodenum and stomach appeared to be unremarkable. However, the ileum appeared to be adequately intact for at least 8-10 cm proximal to the ileocecal valve. This appears to be all jejunum and ileum from a subjective standpoint. Regional peritonitis was noted throughout the mid-abdomen with free fluid. The free fluid was sampled and found to be flocculent yellow. This is consistent with potential bacterial contamination and transudate likely owing to lymphatic obstruction/strangulation owing to the mesenteric lymph node enlargement that was noted. This encompassed the mesenteric artery. The larger mesenteric node measured 6 x 1.8 cm with dramatic, hypoechoic parenchyma and pericapsular inflammatory pattern that was contributing to the peritonitis presentation. The pancreas itself appeared largely unremarkable other than some extension of the intestinal and mesenteric pathology extending into the regions of the pancreas. The pancreas itself appeared largely unremarkable other than some extension of the intestinal and mesenteric pathology extending into the regions of the pancreas.