Follicular thyroid carcinoma presenting as solitary liver metastasis: A case report

Background: Distant metastasis from differentiated thyroid carcinoma at presentation is rare and isolated liver metastasis on presentation is almost unknown. We report a case of primary follicular carcinoma of the thyroid with isolated liver metastasis at presentation. Case presentation: A 65-year-old man of Kashmiri origin presented to our tertiary referral center with obstructive jaundice; he was evaluated with magnetic resonance cholangiopancreatography and positron emission tomography-computed tomography. Positron emission tomography-computed tomography documented a lesion in his liver in addition to a metabolically active thyroid nodule. Fine needle aspiration cytology of the liver lesion supplemented with immunohistochemical analysis using thyroid transcription factor 1 confirmed the lesion as being an isolated metastasis from the primary thyroid lesion (which on fine needle aspiration cytology showed follicular architecture). Conclusions: To best of our knowledge, this is first reported case of primary differentiated thyroid carcinoma presenting with isolated liver metastasis manifesting as obstructive jaundice. © 2016 The Author(s).