Transcript for 6-year-old boy fights battle of a lifetime
Finally tonight here, our very little person of the week. With one giant triumph. Tonight, 6-year-old Jimmy Spagnolo from Pittsburgh, wearing his Superman t-shirt. I'm done! I'm done! Reporter: And he is a little Superman. Giving a thumbs-up because he's now reached the end of a year of chemotherapy for a brain tumor. And to mark his triumph, it's time to ring that bell. Okay, Jimmy. Ring that bell! Reporter: Doing his dance. Right into his mother Lacie's lap. There would be more dancing. Even slapping his belly in victory. Reporter: But what Jimmy didn't know was that the celebration was hardly over. The next day at school, just look at the line waiting for his return. The students, teachers, everyone at Rogers primary school in glenshaw, Pennsylvania, ready to welcome him back. Jimmy's moves were back. And so is he. Jimmy, like so many of the children we have reported on here, across the country, ringing those bells. Young fighters, winning. And back at that school in Pennsylvania, a giant hug for Jimmy. The fighter who has now returned. I'm David Muir. I'll see you Monday. Harvey's tracking morealways wins. Especially in my business.
This transcript has been automatically generated and may not be 100% accurate.