12-09-2008, 08:40 AM
Which of the following statements regarding hypothyroidism is true?
A. Hashimoto's thyroiditis is the most common cause of hypothyroidism worldwide.
B. The annual risk of developing overt clinical hypothyroidism from subclinical hypothyroidism
in patients with positive thyroid peroxidase (TPO) antibodies is 20%.
C. Histologically, Hashimoto's thyroiditis is characterized by marked infiltration of the thyroid
with activated T cells and B cells.
D. A low TSH level excludes the diagnosis of hypothyroidism.
E. Thyroid peroxidase antibodies are present in less than 50% of patients with autoimmune
hypothyroidism.
A. Hashimoto's thyroiditis is the most common cause of hypothyroidism worldwide.
B. The annual risk of developing overt clinical hypothyroidism from subclinical hypothyroidism
in patients with positive thyroid peroxidase (TPO) antibodies is 20%.
C. Histologically, Hashimoto's thyroiditis is characterized by marked infiltration of the thyroid
with activated T cells and B cells.
D. A low TSH level excludes the diagnosis of hypothyroidism.
E. Thyroid peroxidase antibodies are present in less than 50% of patients with autoimmune
hypothyroidism.