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21 Cards in this Set

  • Front
  • Back
arterial supply to thyroid
external carotid --> superior thyroid artery

subclavian --> thyrocervical trunk --> inferior thyroid

aortic arch --> thyroid ima
venous drainage of thyroid
superior, middle and inferior veins --> internal jugular
thyroid malignancy spreads to which nodes
cervical nodes,
paratracheal nodes, or
tracheoesophageal groove nodes (worst! may go into recurrent nerve, trachea or esophagus)
innervation of thyroid
recurrent laryngeal (crosses over inferior thyroid artery on right) --> external (larynx sensory) and internal (larynx mm)

superor laryngeal nerve --> external (cricothyroid mm) and internal (larynx sensory)
thyroid originates from and migrates down from the...
foramen cecum at the base of the tongue
substernal goiters usually are from .... do/don't take up radioiodine...and result in ...
adenomatous hyperplasia
don't take up radioiodine
tracheoesophageal compression
__ and __ join to form T3 and T4
iodine and tyrosine
Parafollicular cells (C cells) make ___ and are part of which cell system?

is the preferred tx of Grave's disease medical or surgical?
medical by
1. PO radioiodine (they tend to remit spontaneously)
2. propylthiouracil and methimazole (inhibit peroxidase so iodide -x> iodine and inhibits T3 -> T4)
BEWARE drug induced SLE, agranulocytosis
name four complications of thyroidectomy
thyroid storm (prevent by first making patient euthyroid)
hypoparathyroidism (Chovstek's and Trousseau's; tx with IV ca gluconate)
recurrent laryngeal n. injury
what are the eponyms for 1. diffuse toxic non-nodular goiter and 2. toxic multinodular goiter
1. Grave's disease
2. Plummer's disease
do the nodules in plummer's disease uptake radioiodine? are they suppressed by thyroxine?

toxic adenoma of thyroid is caused from?
autonomous hyperfunctioning solitary nodule
tx of toxic adenoma/
surgical excision (lobectomy)
tx of plummer's disease?
same as for Grave's (medical first, then surgical)
how do you distinguish de Quervains thyroiditis (giant cell/granulomatous) from Grave's?
de Quervains does not take up radioiodine (and therefore antithyroid drugs are ineffective)
two forms of chronic thyroiditis
hashimoto's (struma lyphomatosa; eu- or hypothyroid, has anti-thyroid antibodies, tx with thyroxine)
Riedels (fibrous)thyroiditis- gland is replaced with fibrous tissue --> rock hard --> may cause pressure sx like cough)
MCC thyroid surgery
risks factors for thyroid malignancy vs. benign neoplasm
>age 40
family hx of MEDULLARY thyroid CA
radiation exposure hx
firm nodulesinfiltration
multiple nodules
lymph nodes (ipsilateral)
immobility of vocal cord
MC thyroid malignancy
papillary carcinoma (esp women with radiation hx)
thyroid malignancy associated with ...
radiation exposure?
iodine deficiency?genetically?
from other thyroid neoplasms?
medullary (make calcitonin)