thyroid disease Flashcards

1
Q

what are the follicular cells lined with?

A

cuboidal cells

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2
Q

which hormones are secreted by negative feedback of TSH?

A

T3 and T4

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3
Q

what do the c cells secrete?

A

calcitonin

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4
Q

2 diseases as a result of thyroid secretory malfunction?

A

hyper + hypo - thyroidism

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5
Q

swelling of entire thyroid gland?

A

goitre

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6
Q

3 types of solitary masses on thyroid gland?

A

nodular goitre
adenoma
carcinoma

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7
Q

what is hyperthyroidism due to?

A

excess T3 and T4

rare cause - excess TSH

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8
Q

2 most common diseases that cause hyperthyroidism?

A

Grave’s disease

Funcitioning adenoma

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9
Q

other causes of hyperthyroidism?

A

toxic nodular goitre
exogenous thyroid hormone
ectopic secretion by ectopic thyroid tissue/tumours

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10
Q

name 7 symptoms associated with hyperthyroidism?

A
anxiety 
weight loss
tremor
diarrhoea 
palpitations
goitre 
hair loss
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11
Q

what is the most common cause of thyrotoxicosis?

A

graves thyroiditis

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12
Q

what is graves thyroiditis usually associated with?

A

diffuse goitre

increased vascularity

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13
Q

cause of hypothyroidism?

A

insufficient circulating T3 and T4

Hashimoto thyroiditis

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14
Q

what is the result of congenital hypothyroidism?

A

cretinism

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15
Q

what is cretinism?

A

physical growth and mental development are impaired, often irreversibly, when hypothyroidism is present in neonate

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16
Q

name 7 symptoms associated with hypothyroidism?

A
psychosis 
goitre
weight gain 
brittle hair/nails
constipation
cold skin
lethargy
17
Q

Hashimoto thyroiditis?

A

most common cause of acquired hypothyroidism

18
Q

what does Hashimoto thyroiditis initially cause?

A

thyroid enlargement

release of thyroglobulin, causing thyrotoxicosis

19
Q

what does Hashimoto thyroiditis later cause?

A

atrophy and fibrosis

20
Q

specificity of Hashimoto thyroiditis?

A

organ-specific autoimmune disease

21
Q

two autoantibodies that can be detected in serum?

A

one reacts with thyroid peroxidase

other reacts with thyroglobulin