  The non extensive aspects of $p_T$ distributions obtained in high energy
collisions are discussed in relation to possible fractal structure in hadrons,
in the sense of the thermofractal structure recently introduced. The evidences
of self-similarity in both theoretical and experimental works in High Energy
and in Hadron Physics are discussed, to show that the idea of fractal structure
of hadrons and fireballs have being under discussion for decades. The non
extensive self-consistent thermodynamics and the thermofractal structure allow
one to connect non extensivity to intermittence and possibly to parton
distribution functions in a single theoretical framework.
