Bone
Other tumors of bone
Ecchordosis physaliphora



Topic Completed: 1 June 2005

Revised: 3 January 2019

Copyright: (c) 2003-2019, PathologyOutlines.com, Inc.

PubMed search: ecchordosis physaliphora


Nat Pernick, M.D.
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Cite this page: Pernick N Ecchordosis physaliphora. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/boneecchordosis.html. Accessed May 26th, 2020.
Definition / general
  • Ectopic notochordal rests present in 2% of adult autopsies at clivus (base of skull) or anterior pons
  • Notocord represents a primitive spine which normally induces development of future vertebrae and eventually forms nucleus pulposus of intervertebral disc
Case reports
Gross description
  • Discrete gelatinous nodule
Microscopic (histologic) description
  • Cells are uniform without lobularity or variability
  • No pleomorphism or necrosis or mucinous pools containing syncytial cell cords, no / rare mitotic activity
  • Not infiltrative or destructive
Additional references
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