Sonographic Findings of a Right Adrenal Mass and Saddle Thrombi in a 9 Year-Old Pit Bull
Sonographer: Tyler Anderson DVM
Age: 9 years
Gender: Spayed Female
PU/PD with a recent onset of diabetes mellitus. Low-dose dexamethasone results reveal no suppression at 4 and 8 hours post-injection. Patient has severe hind-limb paresis and is unable to stand.
Abdominal sonographic findings reveal a moderately to severely enlarged liver having multifocal nodules throughout the parenchyma; A suppressed, mildly isoechoic and flattened left adrenal gland (LtCr/Cd = 3.4/3.3mm). The right adrenal gland is severely enlarged (RtCr/Cd = 21.1/23.2mm), hypoechoic, and infringes upon the phrenicoabdominal vein and caudal vena cava. Thrombi are noted at the bifurcation of the aorta and caudal vena cava and extends into the internal and external iliacs. Reduced blood flow is noted on color doppler.
Diagnosis and Sonographic Analysis:
Differentials for an adrenal mass include cortical neoplasia:
Benign changes such as a non-functional adenoma vs. myelolipoma vs. hyperplasia
Pheochromocytoma (rare); And a functional adenoma.
Unfortunately the animal was humanely euthanized due to the severity of the patient’s symptoms and sonographic findings.
Special Thanks to Holistic Veterinary Healing for the case and follow-up information.