From Naruto manga and anime, I know that Uchiha Madara died as an old person after he helped Uchiha Obito.
But it was bit weird for me, when Kabuto summoned Uchiha Madara-sama with Edo Tensei, Madara was a younger person.
Again, when Chiyo was summoned, she was older as when she died.
How can it be possible?