Gastrointestinal manifestations of common variable immunodeficiency diagnosed by video- and capsule endoscopy

Capsule endoscopy in non-steroidal anti-inflammatory drugs-enteropathy and miscellaneous, rare intestinal diseases

Despite significant advances over the last decade, mucosal lesions of the small bowel are poorly detected by imaging studies such as CT scan, MRI-enteroclysis and contrast-enhanced abdominal ultrasound. Capsule endoscopy (CE) has dramatically changed the diagnostic approach to intestinal diseases. Moreover, the use of CE can be extended to include other conditions. However, it is difficult to assess the positive influence of CE on patient outcomes in conditions involving a small number of patients, or in critically ill and difficult to examine patients. CE has the advantage of diagnosing intestinal lesions and of directing the use of double balloon enteroscopy (DBE) in order to obtain biopsy specimens. Moreover, CE allows repeated assessment in chronic conditions, especially to detect relapse of an infectious disease.

Capsule endoscopy in the pediatric patient

Wireless capsule endoscopy represents an extraordinary technical innovation in diagnostic gastrointestinal endoscopy. As in adult patients, it opens new horizons that permit an accurate and noninvasive approach to identifying occult lesions in the small bowel in children and adolescents. A limitation in the pediatric age group is the size of the capsule, precluding its use in infants and small toddlers. In children unable to swallow the capsule, "front loading" the gastroscope to introduce it into the duodenum is a suitable alternative approach. Capsule endoscopy is highly useful to evaluate for inflammatory changes in patients suspected to have small bowel Crohn's disease in whom conventional imaging failed to confirm the diagnosis. It is now the method of first choice to assess for small bowel polyps or tumors, to find a source of blood loss in obscure intestinal bleeding, and for undiagnosed malabsorptive conditions such as intestinal lymphangiectasia. Capsule retention is the one major potential adverse effect of capsule endoscopy. In patients suspected to have a small bowel stenosis, consideration should be given to using the patency capsule prior to using the real videocapsule so as to decrease the risk of capsule retention.