Thyroid and Parathyroid Glands

Question 1

Milovancev, JAVMA, 2014:
Partial hyoidectomy for ectopic thyroid carcinomas in dogs

1. Following partial hyoidectomy, which bones of the hyoid apparatus were sutured together?
2. Outcomes?

Answer 1

Milovancev, JAVMA, 2014:

1. After partial hyoidectomy, the thyrohyoid was sutured to the ipsilateral ceratohyoid or epihyoid bones, depending on which was cut
2. Very good functional outcomes

Question 2

Covey, JVIM, 2019:
Bilateral thyroidectomy in cats

1. What % of cats had persistent or recurrent hyperthyroidism after bilateral thyroidectomy?
2. What % of cats had hypothyroidism after bilateral thyroidectomy?
3. What was higher in cats that were hyperthyroid post-op compared to non-hyperthyroid cats?

Answer 2

Covey, JVIM, 2019:

1. 22% had persistent or recurrent hyperthyroidism post-op
2. 49% had hypothyroidism post-op
3. Hyperthyroid cats had higher SDMA relative to creatinine compared to non-hyperthyroid cats

Question 3

Lorange, JAVMA, 2019:
Vessel-sealing device vs conventional hemostatic techniques for thyroidectomy

Benefit(s) of using a vessel-sealing device for thyroidectomy?

Answer 3

Lorange, JAVMA, 2019:

Use of a vessel-sealing device resulted in shorter operative times but did not affect complication rates or post-op hospitalization times

Question 4

Reagan, JAVMA, 2019:
Unilateral thyroidectomy in dogs

1. Peri-op complication rate?
2. Most common intra-op complication?
3. Most common post-op complication?
4. Mortality rate?
5. MST?

Answer 4

Reagan, JAVMA, 2019:

1. Peri-op complication rate: 20%
2. Most common intra-op complication: hemorrhage (8%)
3. Most common post-op complication: aspiration pneumonia (3%)
4. Mortality rate: 2%
5. MST: 911 days

Question 5

Armstrong, JVIM, 2018:
Prophylactic calcitriol administration for parathyroidectomy

Effect of prophylactic calcitriol administration?

Answer 5

Armstrong, JVIM, 2018:

Prophylactic calcitriol administration was not associated with post-op iCa concentrations or its rate of decrease after parathyroidectomy

Question 6

Woods, VRU, 2018:
Ultrasonography of parathyroid glands in healthy cats

Utility of ultrasonography for identifying parathyroid glands in healthy cats?

Answer 6

Woods, VRU, 2018:

Parathyroid glands were often not ultrasonographically observed or were not distinguishable from thyroid tissue, and was worse in older cats due to the prevalence of nodular thyroid lesions

Question 7

Singh, Vet Surg, 2019:
Surgical treatment of primary hyperparathyroidism in cats

1. What % of the tumors were parathyroid adenoma and what % were carcinoma?
2. Calcium levels at discharge?
3. Correlation between pre-op and post-op iCa?
4. Pre-op iCa, hypocalcemia or hypercalcemia at discharge, or a diagnosis of carcinoma were not associated with survival time - true or false?

Answer 7

Singh, Vet Surg, 2019:

1. 63% adenoma, 22% carcinoma
2. At discharge, 19% were hypercalcemic, 16% were hypocalcemic, and 65% were normocalcemic
3. No correlation between pre-op and post-op iCa
4. True