Uvea (iris, choroid and ciliary body), limbus and sclera


Topic Completed: 1 February 2014

Minor changes: 24 December 2020

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PubMed Search: Medulloepithelioma [title] ciliary body

Nat Pernick, M.D.
Page views in 2020: 561
Page views in 2021 to date: 891
Cite this page: Pernick N. Medulloepithelioma. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/eyeuveamedulloepithelioma.html. Accessed December 3rd, 2021.
Definition / general
  • Also called dikytoma
  • Rare, resembles embryonic retina
  • Usually arises from ciliary epithelium, rarely from optic nerve or retina
Microscopic (histologic) images

AFIP images
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Network of cords of
neuroepithelial cells

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Less differentiated
cells with structures
resembling rosettes

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Malignant teratoid medulloepithelioma:
left - malignant neuroepithelial cells
surround anaplastic cartilage;
right - rhabdomyoblastic differentiation

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