The authors report the case of a patient with a thyroid nodule with benign sonographic and cytopathological features that had presented a decrease of more than 50% in three years and changed its pattern during her pregnancy, being diagnosed as papillary carcinoma. It was concluded that pregnancy can either increase the risk for malignant transformation or accelerate the growth of a malignant thyroid nodule, corroborating pre-existing literature data.
Pregnancy; Cancer; Thyroid; Carcinoma; Papillary
