WIRELESS CAPSULE ENDOSCOPY (WCE)
Wireless capsule endoscopy (WCE) of the esophagus through the ileum is used for the diagnosis of occult gastrointestinal bleeding (likely involving the small intestine), the site of which has not previously been identified by any of the following: upper gastrointestinal endoscopy, colonoscopy, push enteroscopy, nuclear imaging, or radiological procedures.
Wireless capsule endoscopy of the esophagus is used for the evaluation of esophageal varices in individuals with portal hypertension, and may be used as an alternative to upper GI endoscopy.
COLON CAPSULE ENDOSCOPY (CCE)
Colon Capsule Endoscopy (CCE) is a noninvasive procedure that does not require air inflation or sedation and allows for minimally invasive and painless colonic evaluation.
MAGNETIC CAPSULE ENDOSCOPY
Magnetic Capsule Endoscopy is a noninvasive procedure that allows for visualization of the gastric mucosa through remote magnetic manipulation without the need for sedation.
In May 2020, the U.S. Food and Drug Administration (FDA) approved a novel magnetically maneuvered CE system (NaviCam™; AnX Robotica, Inc.) This system consists of a single-use ingestible capsule and magnet linked to a physician-operated console. The capsule contains a camera that wirelessly captures images of the desired anatomy. The console allows the operator to control the motion and direction of the capsule, ensuring visualization of the entire stomach. The capsule leaves the body in 24 hours on average but may take as long as 2 weeks. The device is contraindicated for use in individuals with gastrointestinal obstruction, stenosis, fistula, or those with dysphagia. Other contraindications include individuals with cardiac pacemakers or other implantable electronic medical devices as well as pregnant women, those less than 22 years of age, and those with a body mass index 38 or greater.
For individuals who have unexplained upper abdominal complaints who receive magnetic capsule endoscopy (CE), the evidence includes diagnostic accuracy studies. Relevant outcomes are test validity, symptoms, change in disease status, and treatment-related morbidity. Studies evaluating the diagnostic characteristics of magnetic CE as compared to conventional gastroscopy in the target population have generally demonstrated similar accuracy, sensitivity, and specificity, with increases in individual preference and an acceptable safety profile with the magnetic CE approach. However, the diagnostic characteristics of magnetic CE are inadequate to substitute for other modalities or to triage individuals to other modalities based on the current literature. Direct evidence of improved outcomes or a strong chain of evidence to improved outcomes is lacking. The evidence is insufficient to determine that the technology results in an improvement in the net health outcome.