130 Thyroid Flashcards

1
Q

What is the most common cause of hyperthyroidism?

A

Grave’s disease

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2
Q

What are the symptoms of hyperthyroidism?

A
weight loss
increased appetite
nervousness
sweating
tremors
heat intolerance
palpitation
exophalmos
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3
Q

What does Grave’s disease consist of?

A

hyperthyroidism
thyroid enlargement
opthalmopathy
dermopathy

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4
Q

What is hypothyroidism?

A

Under secretion of thyroid hormones

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5
Q

What are the causes of hypothyroidism

A

iodine deficiency
thyroid disease
pituitary abnormalities

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6
Q

What are the symptoms of hypothyroidism?

A
weight gain
hair loss
lethargy 
myxedema
cold intolerance
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7
Q

Diffuse non-toxic goiter (Colloid Goiter)

A

Early phase. Uniform enlargement of thyroid gland. Benign.

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8
Q

Adenomatous Hyperplasia (Multi-Nodular thyroid)

A

Late phase.
Multiple nodules
Hypothyroidism

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9
Q

Acute Thyroiditis

A

Rare
Caused by bacterial infection
destruction of the thyroid

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10
Q

Subacute Thyroiditis

A

Caused by viral infection destruction of the thyroid

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11
Q

Autoimmune Thyroiditis

A

Hashimoto’s disease

Most common type of thyroiditis destruction of the thyroid

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12
Q

Symptoms of thyroiditis

A

exhibits symptoms of hyperthyroidism, but actually has hypothyroidism

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13
Q

What is the treatment for thyroiditis?

A

Synthroid (synthetic hormone similar to T4)

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14
Q

Thyroid Adenoma

A

more common in females

well circumscribed isoechoic lesion with hypoechoic halo

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15
Q

Parathyroid Anatomy and Measurements

A
4 or more glands
2 superior / 2 inferior
posterior aspect of the thyroid
SIZE - less than 4 mm
not normally visualized
flat-shaped
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16
Q

Functions of the parathyroid

A

Production of PTH

Regulation of serum calcium

17
Q

hypoparathyroidism treatment

A

Vit D and calcium

18
Q

hyperparathyroidism

A

hypercalcemia

may lead to vascular wall calcification

19
Q

What is the endocrine system composed of?

A

pituitary gland, thyroid, ovaries, testicles and pancreas

20
Q

What are the functions of the thyroid?

A

metabolism, growth and development.

Production, storage and secretion of T3 and T4

21
Q

What is the location of the thyroid gland?

A

anterior and lateral to trachea
C5 to T1
below larynx

22
Q

What is the size of the thyroid?

A

4-6cm length
2-3cm AP
1-2cm wide

Isthmus
2-6mm AP

23
Q

What are the muscular landmarks for the thyroid?

A
Sternocleidomastoid
Strap muscles:
sternothyroid
sternohyoid
omohyoid
24
Q

What are the vascular landmarks for the thyroid?

A

CCA medial and IJV lateral

25
Q

What is the location of esophagus?

A

posterior and left lateral to the trachea

Medial to the lower pole of the thyroid

26
Q

What is the first branch of ECA?

A

Superior thyroid artery

27
Q

What is the #1 reason for parathyroid scanning?

A

hypercalcemia

Done AFTER CT scan

28
Q

What is the patient positioning for a thyroid scan?

A

supine
chin extended
pillow under neck/shoulder

29
Q

What kind of transducer do you use for thyroid scanning?

A

linear high frequency

7.5-12.0 MHz

30
Q

What is the echogenicity of the thyroid?

A

homogenous

hyperechoic capsule

31
Q

High TSH levels indicate

A

Low T3 and T4
Hypothyroidism
My indicate thyroiditis

32
Q

Low TSH levels indicate

A

High T3 and T4

Hyperthyroidism

33
Q

Scintigraphy

A

nuclear medicine

34
Q

Grave’s disease

A

hyperthyroidism
autoimmune abnormalities
thyroid enlargement

35
Q

Hashimoto’s disease presentation

A

hypothyroidism
enlargement of the heart/pooling of the blood
speech and mental impairment
mental retardation in kids

36
Q

Sonographic presentation of thyroiditis

A

heterogenous, enlarged thyroid