Odontogenic myxoma


  • It represents approximately 3 – 6% of all odontogenic tumors. It is painless and grows slowly.
  • It can occur at any age but most commonly in the second and third decades of life.
  • More often affect the mandible (molar / premolar region).
  • Typically multilocular (internal septa- strings of a tennis racket or honeycomb appearance). Large lesions can have the sun ray appearance of an osteosarcoma.
  • Often well-defined.
  • Adjacent teeth can be displaced but rarely resorbed. It causes less bone expansion than in other benign tumors.

Differential diagnosis


Courtesy of Prof. CJ Nortje, University of Stellenbosch, S. Africa.

Two cases of Odontogenic myxoma.