Limitations of Raised Thyroglobulin: Two Cases of Benign Lymphadenopathy Mimicking Thyroid Carcinoma

Markedly elevated thyroglobulin (Tg) washout is often considered highly suggestive of metastatic differentiated thyroid cancer. We present two cases of false-positive Tg washout in cervical lymph nodes with benign pathology, notably in patients who were carriers of iron-handling disorders. These findings highlight the limitations of Tg washout as a standalone marker and the need for multimodal interpretation.