Exposure to radioactive iodine-131 for scintigraphy or therapy does not preclude pregnancy in thyroid cancer patients.

Abstract

With the exception of miscarriages, there is no evidence that exposure to radioiodine affects the outcome of subsequent pregnancies and offspring. The question of whether an increased incidence of miscarriages within 1 yr of 131I administration relates to gonadal irradiation or to insufficient control of hormonal thyroid status remains to be established.