Here's a little graph: http://www.google.com/trends?q=Colon+Cancer,Breast+Cancer,Prostate+Cancer,Lung+Cancer,chordoma&ctab=0&geo=all&date=all&sort=0 http://www

Here's a little graph: http://www.google.com/trends?q=Colon+Cancer,Breast+Cancer,Prostate+Cancer,Lung+Cancer,chordoma&ctab=0&geo=all&date=all&sort=0 http://www.google.com/trends?q=Colon+Cancer,Breast+Cancer,Pr... Note the thin purple line on the graph, that's chordoma, in case you missed it. While this isn't scientific, it certainly paints a picture.