This information was posted last year but I only recently came across this lengthy list of confusing yet enlightening details. At least finally there is a different ratio of diagnosed cases. It had been 1.8 in 1 million since the 80s. This report claims it's 1-2 million cases per year. That sounds more realistic from the numbers I have been tracking.
Another interesting revelation is that it was discovered in the 1800s not the 1940s which blows many of my environmental theories out of the water.
I have heard doctors refer to PVNS as different names such as Tenosynovial Giant Cell Tumor. Depends on where these tumors reside apparently. If it's in your knee then it's PVNS. If it's in a finger then it's something else. It can also be referred to as xanthomatosis, benign synovioma, and pigmented villonodular tenosynovitis.
I'm excited to find the most extensively researched and well thought out discovery and give applause to those who put this information together.
http://www.orthopaedicsone.com/display/PORT/Tenosynovial+Giant+Cell+Tumor
