benign periosteal reaction

Benign periosteal reaction in an osteoid osteoma

Benign periosteal reaction
- Detecting a benign periosteal reaction may be very helpful, since malignant lesions never cause a benign periosteal reaction.
- A benign type of periosteal reaction is a thick, wavy and uniform callus formation resulting from chronic irritation.
-In the case of benign, slowly growing lesions, the periosteum has time to lay down thick new bone and remodel it into a more normal-appearing cortex.


http://www.radiologyassistant.nl/en/494e15cbf0d8d