St Thyroid and parathyroid Flashcards Preview

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Flashcards in St Thyroid and parathyroid Deck (26)
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1

Ultimobranchial body rest in thryoid

  • Gives rise to C cells

2

Lingual thyroid

  • dense fibrous tissue

3

Parathyroid tissue in thyroid capsule

4

Normal thryoid

  • cuboidal epihtelial cells with reich vacular network

5

Palpation thyroiditis

  • histiocytes and lymphocytes

6

Hashimoto's thyroiditis

7

Radiation change, nodular goiter

8

Hemochromatosis, PPB

9

Papillary thyroid carcinoma

10

Metastatic PTC in LN

  • +: CK, thyroglobulin

11

PTC, solid variant

12

Follicular adenoma

  • no capsular or vascular invasion
  • microfollicular pattern, thinly encapsulated

13

Follicular carcinoma

  • BM bx showing thyroid follicles
  • capsular invasion by primary
  • vascular invasion in primary specimen

14

Hurthle cell nodule with extensive necrosis

15

Medullary carcinoma

  • nests of rounded mildly pleomorphic cells surrounded by amyloid

16

Medullary carcinoma

  • +: calcitonin, CEA

17

 C cell nodular proliferation

  • MEN2A
  • +: calcitonin

18

Insular carcinoma

  • poorly differentiated
  • showing some neuroendocrine growth pattern

19

DLBCL in pt with Hashimoto's thyroiditis

20

Post-FNA infarction of thyroid

21

Normal parathyroid

22

Parathyroid adenoma

  • lack of fat

23

Parathryoid carcinoma

  • invasion of other structures
  • vascular invasion
  • mitoses
  • nuclear pleomorphism present
  • intranuclear pseudoinclusions

24

Parathyroid carcinoma

  • Difficult to make dx on histo but mitoses helpful
  • Gross and clinical showing invasion of other structures best indicator

25

Normal parathyroid, Oil Red O

  • 80% are nonsecretory phase and contain intracytoplasmic fat 

26

Parathyroid adenoma, Oil Red O

  • total absence of fat