Transcript for Nick Cannon reveals his 5-month-old baby died
- And we're back with our GMA cover story, a raw and emotional Nick Cannon revealing his five-month-old son Zen has passed away. Nick talked about it on his talk show, sharing that his youngest child had been battling a form of brain cancer. Deborah Roberts here with this sad story. Good morning, Deb.
- Good morning, George. Yeah, Nick Cannon is known for his unscripted, off-the-cuff commentary, but this one caught his TV audience and his fans off guard as the talk-show host shared gut-wrenching news of his infant son's final moments of life.
- I happened to last-- holding my son for the last time.
DEBORAH ROBERTS: It was a raw moment for all who heard it.
- But it was still-- it was a beautiful setting.
DEBORAH ROBERTS: An emotional Nick Cannon, a father of seven, tearfully revealing that his five-month-old son Zen lost a battle against a brain tumor.
- The tumor began to grow a lot faster. And so we knew that the time was--
DEBORAH ROBERTS: The 41-year-old controversial talk show host describing how his son, born in June, appeared to have a slight cough and breathing problems. He also noticed the size of his son's head.
NICK CANNON: I really wanted to take him to the doctor to get the breathing and the sinus things checked out. So we thought it would be, you know, a routine process.
DEBORAH ROBERTS: But doctors soon learned that Zen had a rare condition called hydrocephalus, a buildup of fluid in the ventricles deep in the brain, the excess fluid putting pressure on the brain.
- We'll find that a baby had the tumor because the tumor caused the hydrocephalus. The tumor just simply blocked the drainage system, so the water couldn't get out. That's what caused the head to increase in size beyond what would be expected for his children. And the finding of hydrocephalus led to the finding of the tumor.
DEBORAH ROBERTS: Following news of their son's death, Alyssa Scott, Zen's mother, sharing these photos on social media and several videos of moments spent with their precious baby boy.
Cannon dedicated his show to his son Zen, even including a therapist to talk about grief. He shared that during his son's final minutes, he went on the beach where he says he watched the sun rise and set.
Many of his 5 million Instagram followers are showering him with love and support. George.
- I bet they are. OK, Deborah, thank you very much.
This transcript has been automatically generated and may not be 100% accurate.