Follicular thyroid cancer with functioning lung metastasis

Abstract

• Func%oning metastasis from a primary thyroid cancer is rare. • Failure to proceed to hypothyroidism aCer total thyroidectomy denotes remaining hormone produc%on from func%oning metastasis if the thyroid remnant is small. • We present the case of a pa%ent with follicular thyroid cancer, lung metastasis and detectable thyroid hormones aCer thyroidectomy