PMC1140938_01
Alternating Thyroid Function over Time. Numbered time points: (1) initial diagnosis of hypothyroidism; (2) off L-T4 for 5 wk while on vacation; (3) presentation with Graves' disease; (4) I131 treatment; (5) severe hyperthyroidism 5 wk after I131 treatment; (6) a few days after treatment with propylthiouracil, propranalol, and Lugol's solution; (7) hypothyroidism about 4 mo after I131 treatment off all medications; (8) hypothyroidism confirmed with another set of TFTs and L-T4 started; (9) relapse of hyperthyroidism and L-T4 discontinued; (10) hyperthyroidism confirmed and methimazole started; (11) hypothyroidism developed and L-T4 resumed.
pmed.0020089.g001.jpg
PMC1140938_01_pmed.0020089.g001.jpg
pmed-0020089-g001
TSH was less than 0.06 mU/l and FT4 was 31 pmol/l (Figure 1).