Thyroid function in patients with breast cancer.

Abstract

Thyroid function has been assessed in 40 patients with breast cancer and compared with an age-matched control female population. The free thyroxine index was lower and the level of thyroid-stimulating hormone in the serum higher in the cancer group and these changes became more marked at 6 months. It is concluded that patients with breast cancer show more evidence of hypothyroidism as time progresses.