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
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