Obligatory medical device diagnostics.
- Proctoscopy (endoscopy of the rectum; examination of the anal canal and lower rectum/foregut).
- Rectoscopy (rectoscopy) – inflammation and bleeding can be localized and possible ulcers (boils) and erosions can be detected; biopsy (tissue sampling) and/or culturing may be performed.
Optional medical device diagnostics – depending on the results of the history, physical examination, laboratory diagnostics and obligatory medical device diagnostics – for differential diagnostic clarification.
- Colonoscopy (colonoscopy) – to exclude inflammatory bowel disease (IBD).
- Magnetic resonance imaging (MRI) or anal endosonography (endoscopic ultrasound (EUS); ultrasound examination performed from the inside, i.e., the ultrasound probe is brought into direct contact with the internal surface (in this case: rectum) by means of an endoscope (optical instrument)). – In the presence of fistulas; for further clarification and precise anatomical recording.
