Other tumors of bone
Ecchordosis physaliphora

Author: Nat Pernick, M.D. (see Authors page)

Revised: 20 October 2016, last major update June 2005

Copyright: (c) 2003-2016,, Inc.

PubMed search: ecchordosis physaliphora

Cite this page: Ecchordosis physaliphora. website. Accessed October 22nd, 2016.
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
Micro 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