Parathyroid Adenoma in a Geriatric Pomeranian
Sonographer: Kara Woody DVM
Gender: Neutered Male
Recent development of hypercalcemia. Patient is currently under therapy by oncologist for a transitional cell carcinoma of the bladder and is doing well.
There is a homogenous severely hypoechoic rounded hypoechoic nodule (2.8x3.2mm) present in the caudal pole of the right thyroid gland. No other parathyroid glands are visualized in either thyroid gland.
Abdominal Ultrasound Interpretation:
Parathyroid Enlargement-DDx: diffuse hyperplasia vs. adenoma vs. adenomatous hyperplasia vs. adenocarcinoma
*Hyperplasia and neoplasia can overlap in size and cannot be differentiated with ultrasound alone (both look the same sonographically) but requires histopathology to definitively diagnose.
The mass was removed by a board certified surgeon and histopathology was performed which was consistent with a parathyroid adenoma with complete excision. The patient’s hypercalcemia resolved after removal and he continues to do well.
Parathyroid tumors are an important differential in hypercalcemic patients. The majority of these tumors are benign adenomas and removal is curative. These tumors are often easily visualized with a cervical ultrasound. Providing the surgeon with an exact location will greatly assist with surgical planning.
Special thanks to Colonial Animal Hospital for collaborating on this case.