CNS tumor

Pineal tumors

Pineal parenchymal tumor of intermediate differentiation



Topic Completed: 1 January 2006

Minor changes: 18 August 2020

Copyright: 2002-2021, PathologyOutlines.com, Inc.

PubMed Search: Pineal parenchymal tumor of intermediate differentiation

Nat Pernick, M.D.
Page views in 2020: 857
Page views in 2021 to date: 1,202
Cite this page: Pernick N. Pineal parenchymal tumor of intermediate differentiation. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/cnstumorpinealparenchymalintermediate.html. Accessed December 8th, 2021.
Definition / general
  • Features intermediate between pineocytoma and pineoblastoma
  • 10% of pineal parenchymal tumors
  • Occasionally associated with CNS or extraneural metastasis but otherwise difficult to predict prognosis
  • Better survival than pineoblastoma
Microscopic (histologic) description
  • Marked hypercellularity but relatively bland nuclear features
  • No / mild nuclear pleomorphism
  • No / rare pinocytomatous rosettes
  • Minimal mitotic activity
Molecular / cytogenetics description
Additional references
Back to top
Image 01 Image 02