<prompt> Which of the following is not a histological variant of thyroid neoplasm?Follicularmerkel cellInsularAnaplastic  <response>: Poorly differentiated thyroid cancer DTC describes a lesion that previously was known as insular thyroid cancer. Poorly DTC may be thought of as occupying a middle ground between DTC and ATC anaplastic thyroid cancer, which is completely dedifferentiated Merkel-cell carcinoma is a rare and aggressive skin cancer Source : Sabiston 20th edition Pg : 910 