Medullary ca of thyroid is associated with increase in -: (A) Calcitonin, (B) Thyroglobulin, (C) T
3, (D) T
4
Answer is A. The cells of medullary carcinomas, similar to normal 'C' cells, secrete calcitonin.
In some instance other hormones are secreted such as somatostatin, serotonin, and VIP.