You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is In papillary Ca thyroid all are true except and explain in detail?
Most common thyroid cancer (70-80%) Histologically the tumour shows papillary projections (psammoma bodies) and characteristic pale, empty nuclei (Orphan Annie-eyed nuclei). Papillary carcinomas are very seldom encapsulated. Spread to the lymph nodes is common, but blood-borne metastases are unusual unless the tumour is extrathyroidal Source : Bailey and love 26th edition Pg : 765