Soft tissue
Extraskeletal bone tumors

Author: Vijay Shankar, M.D. (see Authors page)

Revised: 10 August 2016, last major update November 2012

Copyright: (c) 2002-2016,, Inc.

PubMed Search: Parachordoma

Cite this page: Parachordoma. website. Accessed October 28th, 2016.
Definition / General
  • Rare (< 50 cases reported) soft-tissue tumor resembling extraskeletal myxoid chondrosarcoma and chordoma
  • Develops next to tendon, synovium, osseous structures in extremities
  • Mean age 35 years, range 7 - 62 years
  • Surgical excision usually adequate
Case Reports
Micro Description
  • Well circumscribed lobules of large, round and eosinophilic cells, focally resembling physaliferous cells or cartilaginous cells in myxoid to densely hyaline matrix
  • Also spindle cells
Micro Images

Images hosted on other servers:

Presacral tumor

Upper arm

Positive Stains
Negative Stains
Molecular / Cytogenetics Description
  • Trisomy 15 (one case), monosomy 1, 16, 17
Differential Diagnosis