Spontaneous Regression of Primary Thyroid Lymphoma: Two Rarities at the Same Time

Abstract

Primary thyroid lymphomas are pretty uncommon, and constitute about 5% of the neoplasms of this organ. Spontaneous tumor regressionis defined as the total or partial disappearance of a tumor as proven by microscope without treatment or under inadequate treatment. It isestimated to happen in one out of 60,000-100,000 cases. We present a case of primary thyroid lymphoma with spontaneous regression afterdiagnostic puncture and corroborated with hemithyroidectomy at four months. The patient died after twenty-six months of follow-up becauseof endocarditis and there was no relapse at any time.