CT scan after colonoscopy

Good morning 

my husband had a colonoscopy on Monday after a poo test found blood.  He has had various blood tests and is anaemic but all other results were ok.

the colonoscopy found a cancerous tumour and he is booked for a ct scan on Monday.  He has spoken to a couple of other people who have had a bowel cancer diagnosis and have had treatment but neither had a ct scan.  I’m worried now - does this mean they think the cancer has spread?  Much appreciate any advice.  Thank you