papillary

Definition of papillary thyroid cancer
National Cancer Institute

papillary thyroid cancer

(PA-pih-LAYR-ee THY-royd KAN-ser)
Cancer that forms in follicular cells in the thyroid and grows in small finger-like shapes. It grows slowly, is more common in women than in men, and often occurs before age 45. It is the most common type of thyroid cancer.

Source: NCI Dictionary of Cancer Terms