Common Bile Duct, Duodenal Papilla, and Portal Hilus Imaging In A 13-Year-Old MN DSH Cat: Our Case Of the Month 2021
Teamwork makes the dreamwork! Team scanning is a fantastic way to learn other's imaging techniques, tips, and tricks. In this Case Of the Month, we are focused on "old cat tubes", imaging of the common bile duct, duodenal papilla, and biliary tree. This 13-year-old cat had some pathology plugging up the tubes. See what our team found with images provided by Shari Reffi, CVT, SDEP® Certified clinical sonographer for SonoPath Mobile Veterinary Ultrasound and Jessica Miller, BS, RDMS, clinical sonographer for SonoPath Mobile Veterinary Ultrasound. Interpretation of ultrasound images by Eric Lindquist, DMV, DABVP, Cert. IVUSS and cytology interpretation by L.D. McGill, DVM, Ph.D., DACVP.
Decreased appetite. Current meds: Metronidazole, Denamarin, Mirtazapine. ALT 393, T. bili 5.7, Mag 2.7, Chol 307, Amyl 1891, PSL 50, Lymphs 9, Mono 8, Neuts 11,680, Mono 1280,Eos. 1600, USG 1.048.
Spleen: The spleen was mildly enlarged with uniform, but subtly micronodular parenchyma, and undulating capsular contour. This is consistent with reactive spleen owing to immune stimulus or early infiltrative disease such as mast cell disease or lymphoma.
Liver: The hepatic parenchyma was uniformly swollen. Lobar biliary duct dilation was noted owing to post hepatic obstruction. The gallbladder revealed a 1.13 cm calculus with echogenic debris. The gallbladder wall was mildly thickened and echogenic. The common bile duct was followed to the duodenal papilla. The common bile duct appeared to taper normally, yet the common bile duct was excessively dilated up to 0.5 cm. The hepatic lymph nodes are slightly enlarged and measured 0.6 cm.
Additional cytology notes: "The changes in the liver support chronic inflammation and evidence of secondary hepatocellular change. This could be due to biliary obstruction or possibly due to pancreatitis ascending up the biliary tree with inflammation. There is no suggestion of malignancy nor do we find changes supporting sepsis. The changes are more characteristic of chronic inflammation which is likely secondary to the biliary problem or pancreatitis. The changes in the spleen are likely secondary to the problems in the liver. This could be due to inflammation in the biliary tree, pancreatitis or other changes. There is no suggestion of neoplasia or sepsis in the spleen. Further treatment for the gallbladder obstruction and possible pancreatitis was encouraged in this case." - Larry McGill, DVM, PH.D., DACVP.
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