Results: MTC and CCH were both characterized by a significant overexpression of the whole set of miRNAs (the increase being 4.2-fold for miR-21, 6.7-fold for miR-127, 8.8-fold for miR-154, 6.6-fold for miR-224, 5.8-fold for miR-323 and 6.1-fold for miR-370, 13-fold for miR-9*, 6.7-fold for miR-183 and 10.1 for miR-375, p<0.0001).