Cite this page: Roychowdhury M. Secondary tumors. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/parathyroidspread.html. Accessed January 18th, 2021.
Definition / general
- Papillary thyroid carcinoma: parathyroid gland involvement found in 2%; either
- Direct invasion with infiltrative pattern
- Direct invasion with expansile growth pattern and formation of pseudocapsule
- Metastases (Arch Pathol Lab Med 2002;126:1511)
- Usually > 1 cm; 30% are 1 cm or less