<prompt> Variant of papillary carcinoma thyroidMedullaryWahinColumnar cellInsular  <response>: Papillary carcinoma common in female and younger age group . Its called hormone dependend tumour. Types: tall cell type - very aggresive type show capsular and vascular invasion. Columnar type- seen in males . Treatment :total oe near total thyroidectomy Suppresive dose of L thyroxine. SRBs Manual of Surgery.Edition -5. Pg no:480 