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Capsule retention occurred in 1.4% of our patients (14/1000). Eleven patients failed to pass the capsule because of nonsteroidal anti-inflammatory drug (NSAID) enteropathy (diaphragm disease). One patient had capsule retention from an obstructing carcinoid tumor. Metastatic ovarian cancer with invasion of the ileum was the cause of retention in another patient. One patient who did not have surgical removal of the capsule because of loss of follow-up had retention caused by a small-bowel tumor suspicious for carcinoid tumor on CT enterography. All patients remained "asymptomatic" from the retained capsules. Thirteen patients underwent elective partial small-bowel resection and capsule removal. No deaths were associated with these surgeries. Eleven patients recovered promptly, whereas 2 patients had mild postoperative ileus.
Retention of the capsule endoscope appears to be infrequent. The most common cause is diaphragm disease resulting from NSAIDs in this study population. In most cases, capsule retention is asymptomatic, and it usually leads to surgical removal, which appears safe and also identifies and treats the underlying small-bowel condition.
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