[A propedeutic concept: the pathologic physiognomy of organs]

After a brief philologic introduction on some correlated concepts of pathogenesis we suggest the concept of pathological physiognomy of the organs. This concept express the conditioning that the peculiar structure, topography and function of an organ exercise on the characteristic configuration (and sometimes even on the possibility) of a pathological process in it. As fondament of this concept we report several examples of pathology.