Diagnosis and treatment of confirmed and suspected primary hyperparathyroidism in equids: 17 cases (1999-2016).
Equine Vet J
; 52(1): 83-90, 2020 Jan.
Article
in En
| MEDLINE
| ID: mdl-30980730
ABSTRACT
BACKGROUND:
Primary hyperparathyroidism is uncommon in equids.OBJECTIVES:
To describe the diagnostic findings and efficacy of treatment in equids with primary hyperparathyroidism. STUDYDESIGN:
Retrospective case series describing 16 horses and one mule.METHODS:
Cases were identified by retrospective review of records at Cornell University and via an ACVIM listserv query. Inclusion criteria were an equid with hypercalcemia, normal renal function and high parathyroid hormone (PTH) or histopathological diagnosis of a parathyroid adenoma. Equids with normal PTH and PTH-related protein (PTHrP) in the face of hypercalcemia were included as suspect cases.RESULTS:
The most common presenting complaints were weight loss (12/17) and hypercalcemia (10/17). PTH was above reference range in 12/17 cases. Suspected parathyroid tumours were localised in 12/14 equids imaged using ultrasonography alone (2/3), technetium 99m Tc sestamibi scintigraphy alone (1/1) or both modalities (9/10). Three horses did not have imaging performed. Surgical exploration successfully excised tumours in six of 10 cases. Five were located at the thoracic inlet, and surgery resulted in complete cure. One tumour was excised from the thyroid lobe, and the horse remained hypercalcemic. Four other cases explored surgically, four treated medically and three that were not treated also remained hypercalcemic. MAINLIMITATIONS:
The small study size prohibited statistical analysis.CONCLUSIONS:
Parathyroid adenomas in equids can be successfully localised with ultrasonography and scintigraphy. Surgical excision appears more likely to be successful for single gland disease at the thoracic inlet.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Parathyroid Neoplasms
/
Adenoma
/
Equidae
/
Hyperparathyroidism
Type of study:
Diagnostic_studies
/
Observational_studies
/
Prognostic_studies
Limits:
Animals
Language:
En
Journal:
Equine Vet J
Year:
2020
Document type:
Article
Affiliation country:
Estados Unidos