a review of clinical and laboratory features of thyroid cancer , designed to help in a more precise selection of patients for operation , showed that factors contributing to a high index of suspicion of cancer include previous exposure to low doses of radiation , the presence of a firm , solitary thyroid nodule clearly different from the rest of the gland , a young patient , nodules that are `` '' cold '' '' on scan with radioiodine , and nodules that fail to regress after an adequate trial of thyroxine therapy .
C0549473
of thyroid cancer
C0006826
cancer