The Strahan family is finding strength during a challenging time to support Michael Strahan's daughter, Isabella Strahan (pictured on the right in the photo), as she battles brain cancer.

In an emotionally candid interview, Michael sat alongside his 19-year-old daughter as she opened up on "GMA" on how her life has changed since being diagnosed with a malignant brain tumor known as medulloblastoma.

Shortly after entering her freshman year at the University of Southern California in Los Angeles, Isabella began experiencing symptoms, including headaches and nausea. 

Then, on Oct. 25, she awakened and realized she needed help.

"I woke up, probably at like, 1 p.m. I dreaded waking up. But I was throwing up blood," she recounted. "I was like, 'Hm, this probably isn't good.' So I texted [my sister], who then notified the whole family."

After seeking medical attention, doctors discovered a fast-growing 4-centimeter tumor, larger than a golf ball, had been growing on the back of her brain.

Medulloblastoma is a malignant pediatric brain tumor that arises in the cerebellum, a part of the brain located at the base of the skull, as cited by John Hopkins Medical. Treatment for this disease includes surgery, radiation, and chemotherapy. According to the Journal of Clinical Neuroscience, approximately 500 children are diagnosed with a type of cancer each year.

One day before her 19th birthday, Isabella had surgery at Cedars-Sinai to remove the mass, which was followed by a month of rehabilitation and multiple rounds of radiation.

For Isabella –who is also a twin– she is walking into this new season and new year as a fighter.

"So I just finished radiation therapy, which is proton radiation, and I got to ring the bell yesterday," she said. "It was great. It was very exciting because it's been a long 30 sessions, six weeks."

She continued, "I'm feeling good. Not too bad. And I'm very excited for this whole process to wrap. But you just have to keep living every day, I think, through the whole thing."

Currently, she is preparing to begin chemotherapy at Duke Children's Hospital & Health Center in Durham, North Carolina.

"That's my next step. I'm ready for it to start and be one day."

This moment in his life has granted Michael a new perspective. 

"You learn that you're probably not as strong as you thought you were when you have to really think about the real things, and I realized that I need support from everybody," he explained. "You think that I'm the athlete, the tough guy, you know, I can come and handle, I'm the father in the family. It is not about any of that. It doesn't matter. And it's really made me change my perspective on so many things in my life."