Cameron and Vanessa have a strong bond with their son and daughter.

Cameron posted some flashback photos from when his son was a toddler and could ride on his shoulders.

“But at the same time, I don’t think I’m ready,” Cameron admitted toPeople.

Leila, Cameron, and Lucas Mathison smiling together

“You think you are.

The actor relied on his professional training to help him accomplish this difficult task.

Understandably, hearing about their dad’s diagnosis was emotionally difficult.

Cameron Mathison smiling and taking a selfie with Leila and Lucas Mathison

Several months later, Leila teamed up with her dad to support Stand Up To Cancer.

Cameron Mathison’s kids holding his hands while he’s in the hospital