Endocrine Abstracts

70-year-old woman presented with a 2-month history of a left-sided neck lump. Generally well with no swallowing issues, no weight loss, and no systemic upset. Previous history of breast cancer 10 years ago requiring bilateral reduction mammoplasty and radiotherapy. Ex-smoker. There is a strong family history of hypothyroidism. On examination, well and euthyroid. Palpation revealed obvious left-sided anterior neck mass. Nodule was smooth, firm, and minimally tender on palpation. It moved with swallowing. Blood test was unremarkable. Ultrasound scan revealed a 3 × 3 × 4 cm mass in the left lobe of the thyroid, with evidence of microcalcification, and classed as U4. No lymphadenopathy. FNA come back as Thy3 F indeterminate. Underwent diagnostic hemithyroidectomy and histology revealed pT3 a high grade follicular neoplasm with some poorly differentiated component and widespread lymphovascular invasion. She had completion thyroidectomy, and awaiting radioiodine ablation.