Colonoscopy
![Colonoscopy](https://gipatientdev.gastro.org/wp-content/uploads/2021/07/Patient-Ed-2019-Colonoscopy-880x1024.jpg)
A colonoscopy is a procedure performed by a doctor called a gastroenterologist, who uses a colonoscope to look inside the colon and check for diseases like cancer or colitis.
Colorectal cancer screening: What to expect when paying
![Colorectal cancer (CRC) screening options](https://gipatientdev.gastro.org/wp-content/uploads/2021/09/CGH-PatientEd-CRCscreening-2020.jpg)
Learn what to expect and what to do if you get a bill you were not expecting after having a colorectal cancer screening.