Noah, three, was diagnosed with the illness in November last year.
Michael Buble’s wife Luisana Lopilato says the couple’s eldest son Noah is doing well in his battle with cancer.
The Canadian singer and Luisana, an Argentinian actress, have returned to her homeland after the three-year-old had treatment in the US.
Speaking at a press conference in Buenos Aires for her latest film on Monday, Luisana, 29, thanked those who had offered their support to the family.
She told reporters: “When things like those that happened to us occur, your take on life changes. It happened to us. Now I value life much more, the now and the today.
“Thank God, my son is well.
“I would like to thank people for their support, for the prayers they said, for their love. And I want them to know that they reached us and that it helped us a lot to come through this.”
“It’s difficult for me to speak about this. It’s very recent and I’m still a bit sensitive about the subject.”
“But the love is daily, when people stop me in the street. It’s wonderful to know that you’re accompanied in life and that people love you.”
Michael, 41, and Luisana put their careers “on hold” following the diagnosis but the actress said seeing Noah “grow and being happy” gave her the strength to finish the upcoming film, Those Who Love, Hate.
She added: “We are looking forward to thinking about the future, to seeing our children grow.”
Noah was diagnosed in November and earlier this year the couple released a statement on Facebook saying he was “progressing well” and doctors were “optimistic” about his future.