Spread from other tumors
Reviewer: Monika Roychowdhury, M.D. (see Reviewers page)
Revised: 17 February 2013, last major update January 2013
Copyright: (c) 2003-2013, PathologyOutlines.com, Inc.
Papillary thyroid carcinoma: parathyroid gland involvement found in 2%; either
(a) direct invasion with infiltrative pattern
(b) direct invasion with expansile growth pattern and formation of pseudocapsule
(c) metastases (Arch Pathol Lab Med 2002;126:1511)
● Usually >1 cm; 30% are 1 cm or less
Various images of papillary carcinoma invading parathyroid gland
End of Parathyroid gland > Neoplasms > Spread from other tumors
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