This is from Orthodox wiki
http://orthodoxwiki.org/Original_sin
Roman Catholic theologians would claim that the basic anthropology is actually almost identical, and that the difference is only in the explanation of what happened in the Fall. In the Orthodox Church the term ancestral sin (Gr. προπατορικό αμάρτημα) is preferred and is used to define the doctrine of man's "inclination towards sin, a heritage from the sin of our progenitors" and that this is removed through baptism. St. Gregory Palamas taught that man's image was tarnished, disfigured, as a consequence of Adam's disobedience.
Catholics like to pretend that they and the orthodox are the same except for the papacy
Not so
They reject the teachings of Augustine on original sin.. they do not believe that man is born with the sin or the guilt of the sin of Adam, only with the effects of the fall.