Joint tumors
Juxta-articular myxoma

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

Revised: 9 July 2018, last major update May 2013

Copyright: (c) 2002-2017,, Inc.

PubMed Search: Juxta-articular myxoma

Cite this page: Shankar, V. Juxta-articular myxoma. website. Accessed August 15th, 2018.
Definition / general
  • Median age 43 years, range 16 - 83 years
  • 72% male
  • Knee (88%), also shoulder, elbow, ankle, hip
Case reports
Clinical images

Images hosted on other servers:

Arthroscopic image
of lesion within
suprapatellar pouch

Gross description
  • Myxoid, mucoid or slimy mass with pale white to yellow color
Gross images

Images hosted on other servers:

Glassy appearance

Microscopic (histologic) description
  • Loosely arranged spindle cells in hypovascular myxoid matrix; variable cystic spaces can be seen
Microscopic (histologic) images

Images hosted on other servers:

Myxoid stroma and spindle cells

Knee joint

Bland myxoid neoplasm
without mesenchymal atypia
or hypercellularity