Amyloid like stroma is seen in-: (A) Papillary tumor, (B) Follicular tumor, (C) Medullary tumor, (D) Anaplastic tumor
Answer is C. harshmohan textbook of pathology 7th edition. *most medullary carcinoma of thyroid have amyloid deposits in stroma which stains positively with Congo red.the amyloid deposits are believed to represents stored calcitonin derived from the neoplastic C cells in the form of pro hormone.