All are true about anaplastic carcinoma thyroid, except:
Anaplastic carcinoma: - Local infiltration is the notorious feature of this carcinoma. - Survival rarely exceeds 6 months. - There is no evidence to suppo chemotherapy in this cancer. - Radiotherapy is given. Ref: Bailey & Love, 25th Edition, Page 794.
Local infiltration
Highly chemosensitive
Surgery is of limited value
Spread by lymphatic route