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  #1  
Old 05-15-2011
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Thyroid Thyroid Problem Question

Woman with 7 week history of palpitations and SOB. pulse is 116/min, and respiration is 25/min.
o/e- non palpable thyroid and no exophthalmos
TSH- 0.01
Ft4- 2.6 ng (N is0.8-2.4)
I123 uptake is <1% (N is 8-2.4)
thyroglobulin <0.5
Thyroglobulin Ab <0.5

What is the underlying cause?
1. exogenous intake of levothyroxine
2. lymphocytic infiltration
3. mutation activation of TSH
4. Stimulation of cytokine of B lymphocytes against thyroid antigens
5. tumor production of b-hcG
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  #2  
Old 05-15-2011
dr-ahmed's Avatar
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Default A

1. exogenous intake of levothyroxine
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  #3  
Old 05-15-2011
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Default 1.exogenous

1.Free T4 high with decreased uptake and low thyroglobulin is s/o exogenous thyroid intake...

Free T4 high with decreased uptake also occurs in initial stages of thyroiditis causing transient self limited hyperthyroidism but that will be with a high TBG I guess
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Old 05-15-2011
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Default A

i think A
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  #5  
Old 05-15-2011
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Default @answer

i think its A coz iodine 131 uptake is decreased.... thats clear .....
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  #6  
Old 05-15-2011
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Default

1. exogenous intake of levothyroxine

TSH 0.01 + I123 uptake is <1%
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  #7  
Old 06-15-2011
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Default

Exogenous intake isince my point of view.

What is the final answer?
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  #8  
Old 06-15-2011
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Default

my answer 2
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