[Diffuse hyperthyroid goiter associated with occult papillary carcinoma of the thyroid. Report of 2 cases].

The association of diffuse hyperthyroid goiter and thyroid cancer is rare and interesting, considering that both diseases affect the same organ but have different pathogenesis and prognosis. We report two patients that consulted for diffuse hyperthyroid goiter and were subjected to a subtotal bilateral thyroidectomy due to antithyroid drug failure. Pathological study revealed the coexistence of diffuse gland hyperplasia and a papillary thyroid carcinoma of less than 7 mm phi. In both cases, the thyroid remanent was ablated with radioactive iodine during the postoperative period and thyroid substitution was started.