JEANNETTE, Pa. -

A Pennsylvania couple plans to have their dying toddler serve as the groom's best man when they wed this weekend.

Two-year-old Logan is the son of Sean Stevenson and Christine Swidorsky, of Jeannette. The couple had planned to wed next year, but decided to move the ceremony up to Saturday so the boy, who has leukemia and other complications, could participate.

The boy has already lost one kidney and has a mass on his remaining kidney. He has Fanconi anemia, a rare disease that often results in cancer. Doctors last week gave the boy two to three weeks to live.

Swidorsky says, "We want Logan in our family pictures, and we want him to see his mother and dad get married."