[Unusual tumor of the thyroid: amyloid goiter]. / Tumoración inusual tiroidea: bocio amiloide.

The goiter amyloid is an infrequent complication in the expanded symptomatic range of the generalized amyloidosis. Much more habitual alteration among the reactive secondary amyloidosis: it's characterized by a fast and progressive growth of the thyroid which can bring about compressive problems over the closest cervical structures. In the same way, it can be observed regarding to neoplastic process of the thyroid gland; either carcinoma medullary or another type. It is necessary its with a clear differentiation. We present you a case of a male suffering systematic reactive amyloidosis, secondary to bronquiectasys in the bosom of a pneumoconiosis, with an increase of serum figures of IgA.