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Flashcards in Thyroiditis Deck (32)
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1

What does the term "Thyroiditis" mean?

- A diverse group of disorders characterized by some form of thyroid inflammation
- Multifaceted disease

2

What are 3 common types of thyroiditis?

- Painful
- Painless
- Hashimotos

3

What are the 2 painful types?

- Subacute Thyroiditis (de Quervains)
- Infectious Thyroiditis (Supperative)

4

What is the painless type?

Silent Thyroiditis or Postpartum Thyroiditis

5

What is the Hashimotos type?

Chronic Autoimmune Thyroiditis

6

What are the 3 phases of Thyroiditis?

- Hyper
- Hypo
- Euthyroid

7

What occurs during the hyper phase?

- Inflammation damages thyroid follicles
- Releases the preformed TH into circulation (thyrotoxic stage)

8

How long does the hyper phase last?

- This lasts ~ 4-10 wks
- Spontaneous remission begins ~4-8 wks

9

What occurs during the hypo phase?

- All the preformed TH is exhausted
- New TH has ceased

10

How long does the hypo phase last?

- This lasts ~ 2 mos
- Usually no TH therapy is needed as it is mild, unless pt has S/Sxs of hypothyroidism

11

What occurs during the Euthyroid phase?

- As the follicles regenerate, a state of euthyroid is restored
- Etiology dependent, 90-95% of pts return to normal thyroid fxn

12

What are the causes of Painful Thyroiditis: Subacute (de Quervains)?

- Postviral: Coxsackie, Mumps, Influenza, Adenovirus
- 30-50yo W>M

13

What are the clinical presentations of Painful Thyroiditis: Subacute (de Quervains)?

- Onset: acute and severe
- Sore throat
- Exquisitely tender, enlarged thyroid (a small goiter)
- Febrile
- Signs of: Hyperthyroidism followed by Hypothyroidism

14

What are the causes of Painful Thyroiditis: Infectious (Suppurative)?

- Staph or Strep
- Esp. in immunocompromised pts or Children (acute/chronic)

15

What is the clinical presentations of Painful Thyroiditis: Infectious (Suppurative)?

- Onset – sudden, severe neck pain
- Focal tenderness of involved area (a small asymmetrical goiter)
- Febrile
- Dysphagia
- Erythema of the overlying skin

16

What are the dx test for painful subacute (de quiervans) thyroiditis?

- Thyroid function x 6 mo.
- WBC: ↑-left shift
- ESR: ↑
- FNA Bx: if in doubt
- Thyroid Antibodies: Negative (TPOAb-)

17

What are the dx test for painful infectious (Suppurative) thyroiditis?

- Thyroid Function: Normal
- WBC: ↑-left shift
- ESR: ↑
- FNA Biopsy: Polymorphonuclear Leuks.

18

What is the tx for painful subacute (de quiervans) thyroiditis?

- Symptoms: ASA/NSAIDs
- If systemic: Prednisone
- Monitor thyroid Fxn: q2-4 wks. (TSH/T4)
- Hypothyroid phase: Levothyroxine

19

What are the tx for painful infectious (Suppurative) thyroiditis?

- Antibx: determined by C&S
- Poss. Surgery: drain abscess

20

Painless Thyroiditis (Silent or Postpartum Thyroiditis) occurs in what type of pts?

Underlying autoimmune pts

21

Painless Thyroiditis (Silent or Postpartum Thyroiditis) has the same sxs as subacute except for what?

Little or No Thyroid Tenderness

22

When is Painless Thyroiditis coined Postpartum Thyroiditis?

3-6 months postpartum

23

What is the typical course of Painless Thyroiditis (Silent or Postpartum Thyroiditis)?

- Brief thyrotoxicosis (2-4wks)
- Then hypothyroidism (4-12 wks)
- Usually, only one phase is apparent

24

What are the dx test for Painless Thyroiditis (Silent or Postpartum Thyroiditis)?

- TPOAb: + Antepartum
- RAIU: Suppressed
- ESR: Normal (this helps to differentiate b/w Subacute Thyroiditis)

25

What are the tx for Painless Thyroiditis (Silent or Postpartum Thyroiditis)?

- Severe Thyrotoxic Sxs: Short course of propranolol 20-40mg TID-QID
- During hypothyroid phase: Thyroxine then w/d after 6-9 mos

26

When should a pt f/u if they have Painless Thyroiditis (Silent or Postpartum Thyroiditis)?

- Annual F/U, d/t potential for permanent Hypothyroidism
- Can recur with other pregnancies

27

What is the MC hypothyroid disease in the US?

Hashimotos Disease

28

Hashimotos disease is the MC in what population, approx age, and gender?

- MC in Japanese population
- Dx ~ 60yo
- Women > Men

29

What likely represents end stage Hashimoto’s Thyroiditis (rather than a distinct disorder)?

Atrophic Thyroiditis

30

What are the clinical features of Hashimotos Disease?

- Initially Hyperthyroidism Occurs then Signs of Hypothyroidism
- Goiter: irregular and firm