The talismanic number eight has been training with his club Stade Francais since undergoing surgery to drain a haematoma in his right calf three weeks ago.
Parisse, 32, sustained the injury in Italy's final World Cup warm-up game against Wales in Cardiff.
Italy lost their opening Pool D match against France 32-10 before beating Canada 23-18 to revive their hopes of reaching the quarter-finals.
They next play Ireland at the Olympic Stadium on Sunday.
(Reporting by Ed Osmond; editing by Justin Palmer)
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