Thyroid & parathyroid

Other uncommon thyroid carcinomas

Mixed medullary-follicular tumors

Last author update: 1 March 2009
Last staff update: 24 September 2020

Copyright: 2003-2023,, Inc.

PubMed Search: mixed medullary-follicular tumor

Related Topic: Medullary carcinoma

Shahid Islam, M.D., Ph.D.
Page views in 2022: 628
Page views in 2023 to date: 606
Cite this page: Islam S. Mixed medullary-follicular tumors. website. Accessed October 3rd, 2023.
Definition / general
  • Aggressive
Case reports
Microscopic (histologic) images

AFIP images

Tumor cells show lobular growth pattern

Scattered early follicle-like areas

Tumor cells form colloid containing follicles

Many cells have clear cytoplasm

Immunofluorescent staining

Positive stains
Differential diagnosis
  • Entrapping of thyroid follicles by medullary carcinoma
  • Medullary carcinoma with glandular growth pattern
Back to top
Image 01 Image 02