Thyroid & parathyroid

Other uncommon thyroid carcinomas

Mixed medullary-follicular tumors



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

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PubMed Search: mixed medullary-follicular tumor

Related Topic: Medullary carcinoma

Shahid Islam, M.D., Ph.D.
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Cite this page: Islam S. Mixed medullary-follicular tumors. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/thyroidmedullarymixed.html. Accessed March 28th, 2024.
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
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