Is a nose bleed common when you have lung cancer?

My dad was diagnosed with lung cancer last week and he is having his left lung removed this Friday. Today his nose started to bleed. It wasn't bad but I was wondering if that's normal and/or something to worry about. Tomorrow he has a doctor's appointment but I just thought I would ask.
I'm just not familiar with any of this. I just know it's all respiratory so I wanted to be sure.