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What is Most well differentiated thyroid tumor is and explain in detail?
(A) Papillary carcinoma # Follicular cell origin: (A) Differentiated. (B) Undifferentiated.# DIFFERENTIATED:* Papillary carcinoma (60%);* Follicular carcinoma (15%);* Mixed papillary and follicular carcinoma.# UNDIFFERENTIATED:* Anaplastic carcinoma (13%).> Clinical features: It is the most slow growing among the malignant tumours of the thyroid.