Coincidence of follicular lymphoma and hurtle cell thyroid carcinoma in a patient at presentation: which one is the source of bone metastasis? Case report and review of the literature.

Thyroid incidentaloma is defined as a new identified thyroid lesion occasionally detected during imaging studies. Incidence of thyroid incidentalomas is relatively rare in patients with lymphoma. Because of high rate of malignancy, these lesions with high intensity focal 18 FDG uptake detected on positron emission tomography with computed tomography (PET/CT) should undergo to biopsy regardless of size.