Just a few minutes spent writing a birthday card can make one little boy's birthday so much better.

Lucas Cervone, also known as "bear," has been fighting cancer since he was two years old. Even after beating cancer, it has come back.

Now doctors are saying that Lucas has an untreatable tumor.

Lucas is turning 6 on May 7th and his friends and family would love for him to celebrate this birthday with as many birthday cards as possible.

According to DNA Info, you can send the cards to: Lucas Bear Heroes or Lucas Bear, at 40 E. Chicago Ave., No. 162, Chicago, IL 60611.

For more of Lucas's story, follow Lucas Bear Heroes on Facebook.