Neck Flashcards

1
Q

Thin sonoluscent bands anterior surface of thyroid

A

Strap muscles- sternohyoid, sternothyoid

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2
Q

Location so sternoceidomastoid muscle

A

Anteriolaterally

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3
Q

Posterior to thyroid , wedge shaped , sonoluscent, adjacent to cervical vertebrae

A

Longus colli muscle

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4
Q

Vague hypoechoic area btwn Longus colli and thyroid

A

Minor neurovascular bundle

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5
Q

Posterior to thyroid , typically not visualized

A

Parathyroid

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6
Q

Midline with reverberation artifact

A

Trachea

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7
Q

Transversely a target sign

A

Esophagus

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8
Q

TSH:
Produced by-

Normal range-

A

Pituitary

0.3-3.0

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9
Q

Hypothyroidism lab :

TSH- increased or decreased

A

Increased

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10
Q

Serum thyroid hormones -

T4- aka
T3- aka

A

T4- thyroxine

T3- triiodothyronine

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11
Q

Pituitary is regulated by________

A

Hypothalamus

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12
Q

Hypothyroid lab values

A

TSH increased , t4/t3 decreased

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13
Q

Hyperthyroid lab values

A

Decease TSH , increase t4/t3

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14
Q

Most common benign nodule

A

Thyroid adenoma

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15
Q

Thyroid adenoma sonographic presentation

A

Iso or hyperechoic

Cystic

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16
Q

Solitary , well defined mass, usually hypoechoic , may have halo or echogenic rim

A

Follicular adenoma

17
Q

Normal variant extending superior to isthmus

A

Pyramidal lobe

18
Q

Most common thyroid cancer 75-90%

A

Papillary carcinoma

19
Q

Papillary carcinoma sonographic presentation-

Route of spread-

A

Hypoechoic , possible calcification

Cervical lymph nodes

20
Q

Follicular carcinoma- 5-15%
Sonographic presentation-
Differential -
Major route of spread-

A

Encapsulated
Benign follicular adenoma- biopsy to confirm
Blood stream (distal mets to lung & bone)

21
Q

Medullary carcinoma 5%

Secretes - ________ ( useful serum marker)
Associated with_________

A

Calcitonin

MEN- multiple endocrine neoplasia

22
Q

Benign vs malignant:

Cystic

A

Benign

23
Q

Benign vs. malignant

Hypoechoic

A

Possible malignant

24
Q

Benign vs. malignant

Hyperechoic

A

More likely benign

25
Q

Benign vs. malignant

Sharp and well defined_______
Irregular and poorly defined_______

A

Benign

Malignant

26
Q

Benign vs. malignant

Peripheral or eggshell______
Fine and punctate_______ ( common in _______)

A

Benign

Malignant, papillary

27
Q

Benign vs. malignant : peripheral sonoluscent halo

Thin and complete______

Thick and incomplete_______

A

Benign

Malignant