<prompt> Medullary carcinoma thyroid all EXCEPT: March 2013Contains amyloidTSH dependentSecretes calcitoninPatients should be screened for RET point mutation on chromosome 10  <response>: Ans. B i.e. TSH dependent The rate of growth of papillary carcinoma thyroid may be stimulated by TSH Thyroid medullary Ca MTC 80 cases are sporadic, 20 are familial MEN-Ha or MEN-Hb, MTC is the first abnormality expressed in MEN-Ha Ilb, Stroma of MTC shows material with staining propeies of amyloid, MTC can be diagnosed by demonstrating calcitonin within the MTC cells on immuno-histochemical studies, Total thyroidectomy is the TOC 