The same could be said for Edo Madara; his Rinnegan were originally Izuna's eyes, and Madara transferred them to Nagato before he died. Thus, Madara wasn't born with those eyes, and didn't die with them. Further, Nagato was revived in an unhealthy state (crippled and starved), while Madara was revived young and healthy (with Rinnegan). Similarly, Itachi was revived with his vision intact, whereas he died blind.
Basically, Edo Tensei is completely inconsistent. Don't think too hard about it.
Sarutobi was born the same age he died at; same goes for Chiyo.
It's unclear how Edo Madara's Hashirama face was implanted; he stated that it was Kabuto's doing, but how exactly does living tissue become part of an Edo Tensei "confetti" body? There are even numerous times that Madara's body was completely obliterated (such as by the meteor), and the Hashi-face regenerated along with the rest of his Edo body.