Thyroid Flashcards
What is the incidence of false positives with FNA of thyroid nodules
0.04
What % of the normal population will have a positive Chvostek’s sign
0.1
What is the mean age of presentation of MTC in patients with MEN Ila
27
What % of patients with Hurtle cell carcinoma present with distant metastases
???
The local recurrence rate is higher after subtotal than after total thyroidectomy. True.
???
What % of thyroid nodules are malignant
What % of thyroid cancers are well-differentiated
>90%.
What level of TSH is optimal during suppression therapy
0.1 - 0.5 miU/L.
What is the incidence of permanent recurrent laryngeal nerve injury after total thyroidectomy
1 - 4%.
What % of nodules diagnosed as having follicular or Hurtle cells, are malignant
10- 20%.
What % of the population has more than 4 parathyroid glands
10%.
What % of cases of primary hyperparathyroidism are due to diffuse hyperplasia
14-16%.
What is the average lag time between radiation exposure and development of thyroid cancer
15 - 25 years.
What is the incidence of permanent hypoparathyroidism after total thyroidectomy
1-5%.
What % of malignant nodules are suppressible by exogenous TSH
16%.
What % of nodules with an indeterminate FNA are malignant
16.7%.
What % of cold, warm/cool, and hot nodules are malignant
17%, 13%, and 4%, respectively.
In a non-acute setting, what is the maximum useful amount of calcium supplementation
2 grams of calcium/day.
What % of parathyroid glands are located in the mediastinum
2%.
What % of a parathyroid gland is composed of fat
20-30%.
What % of benign nodules are suppressible by exogenous TSH
21 %.
What % of FNAs of thyroid nodules are either nondiagnostic or suspicious
27%.
What % of cases of primary hyperparathyroidism are due to carcinoma
3%.
What % of the population has only 3 parathyroid glands
3%.