The nodule was approached with FNA and came as papillary carcinoma.
Total thyroidectomy was performed:
MICROSCOPIC DESCRIPTION: Sections of thyroid isthmus show a 14mm maximum dimension lobulated tumour partially surrounded by a thick layer of fibrous tissue. The tumour is composed of papillary structures lined by atypical polyhedral cells with large irregular clear nuclei and variable amounts of pale cytoplasm. No lymphovascular or perineural invasion is identified. The tumour is clear of resection margins. The remaining thyroid parenchyma is focally fibrotic and contains a patchy lymphocytic inflammatory infiltrate. No parathyroid tissue is identified. Two lymph nodes show no evidence of malignancy.
DIAGNOSIS: Total thyroidectomy: Papillary carcinoma. - lymphovascular invasion not identified; - perineural invasion not identified; - clear of resection margins.