hyperthyroidism was diagnosed on the basis of clinical signs ( polyuria , polydipsia , polyphagia , weight loss , nervousness ) and high basal serum thyroxine ( t4 ) concentrations , as well as thyroid radioiodine kinetic studies that showed a high radioiodine uptake into the thyroid ( % thyroid uptake ) and markedly increased serum concentrations of protein-bound iodine-131 ( pb131i ) after 131i tracer injection .
C0020550
hyperthyroidism
C0040132
thyroid