Capsule endoscopy photographs bowel that standard scopes may not reach
The patient swallows a small wireless camera that takes images as it passes through the digestive tract. Sensors record the study for specialist review.
It is commonly used for suspected small-bowel bleeding, Crohn disease or selected lesions. It cannot usually take a biopsy or treat bleeding, and visualization depends on bowel preparation and transit.
Known narrowing, previous obstruction, some Crohn strictures or altered anatomy may require cross-sectional imaging or a dissolvable patency capsule before the camera capsule.
Who may be considered?
Specialist review may help when the diagnosis, symptoms and previous treatment create a focused question about capsule endoscopy.
- Iron-deficiency anemia or bleeding after nondiagnostic upper endoscopy and colonoscopy.
- Suspected small-bowel Crohn disease after appropriate imaging.
- Selected polyposis surveillance or small-bowel lesion assessment.
- A focused question where noninvasive mucosal imaging may change management.
What the specialist team must confirm
Review includes the bleeding and anemia timeline, prior gastroscopy and colonoscopy quality, CT or MR enterography, swallowing ability, obstruction symptoms, abdominal surgery, implanted devices and medicines that may affect bleeding or transit.
Key points for this treatment
From unanswered small-bowel question to targeted next steps
Capsule imaging is most useful when prior investigations are complete and the team knows how positive or negative findings will change care.
The result often guides another procedure
After recording, patients follow instructions about eating, device removal and MRI avoidance until passage is confirmed when relevant.
A bleeding lesion may require device-assisted enteroscopy, radiology or surgery. A retained capsule may pass with treatment or need endoscopic or surgical removal.
Risks, limits and realistic expectations
Limitations include missed lesions, poor preparation, incomplete transit and inability to biopsy or treat. Capsule retention is uncommon but important, particularly with strictures or obstruction.
New severe abdominal pain, persistent vomiting, swelling or inability to pass stool after capsule ingestion requires urgent local assessment for obstruction.