By Sandra Rose  | 

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Nick Cannon's youngest son Zen Cannon died of brain cancer over the weekend. Nick announced the sad news on The Nick Cannon Show on Tuesday. He was 5 months old.

Nick and Alyssa Scott welcomed Zen back in June, making him Nick's seventh child.

Nick broke down in tears as he explained his son was diagnosed with hydrocephalus, a fluid buildup on his brain sometimes caused by brain cancer.

The 41-year-old media mogul described his son's symptoms.

"I always noticed he had a cough and so I wanted to check it out," he said.

"He had this interesting breathing and by the time he was two months I noticed he had this nice sized head too — a Cannon head. We didn't think anything of it. But I wanted to take him to the doctor for his sinus and breathing. We thought it would be routine."

The baby had a shunt inserted to drain the fluid.

"This weekend I made an effort to spend the most quality time with Zen. We woke up on Sunday and went to the ocean with him and Alyssa and then I had to fly back to New York for the show. I got a call on my way to the airport to head back to Zen.

"You can't heal until you feel," he told the audience, adding that he's at work so soon after because this is all he knows, calling the episode a "celebration of life" for Zen.