Meta-analysis shows colon capsule endoscopy is effective in detecting colorectal polyps. Spada, C., Hassan, C., Marmo, R., Petruzziello, L., Riccioni, M. E., Zullo, A., Cesaro, P., Pilz, J., & Costamagna, G. Clinical Gastroenterology and Hepatology: The Official Clinical Practice Journal of the American Gastroenterological Association, 8(6):516–522, June, 2010.
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BACKGROUND & AIMS: Colon capsule endoscopy (CCE) is a noninvasive and painless technique used to explore the colon without sedation or air insufflation. We performed a systematic review and meta-analysis to assess the accuracy of CCE in detecting colorectal polyps. METHODS: The MEDLINE, EMBASE, and SCOPUS databases were searched, from 2006 to 2009, for the terms "colon capsule" and "Pillcam colon"; searches included abstracts. Studies were included that focused on detecting colorectal polyps with CCE and that were verified using within-subject reference colonoscopy. The risk of bias within each study was ascertained according to Quality Assessment of Diagnostic Accuracy in Systematic Reviews recommendations. The per-patient sensitivity and specificity were calculated for polyps of any size and for significant findings (polyps, \textgreater or =6 mm in size or \textgreater3 in number). Forest plots were produced based on random-effect models. The risk of bias across studies was assessed using the interstudy heterogeneity statistic, meta-regression, and the Egger test. RESULTS: Eight studies provided data on 837 patients; the prevalences of polyps and significant findings were 57% and 27.4%, respectively. CCE sensitivity for polyps of any size and significant findings were 71% and 68%, respectively. CCE specificity for polyps of any size and significant findings were 75% and 82%, respectively. High levels of heterogeneity (interstudy heterogeneity, \textgreater75%) were not detected. Moderate heterogeneity partially was explained by the different design of individual studies. CCE identified 16 of the 21 cancerous lesions detected by colonoscopy (pooled sensitivity, 76%). CONCLUSIONS: CCE sensitivity for polyps and significant findings compares favorably with other noninvasive colorectal cancer screening strategies. CCE specificity is likely to be underestimated because reference colonoscopy examination results are blinded.
@article{spada_meta-analysis_2010,
	title = {Meta-analysis shows colon capsule endoscopy is effective in detecting colorectal polyps},
	volume = {8},
	issn = {1542-7714},
	doi = {10.1016/j.cgh.2010.02.018},
	abstract = {BACKGROUND \& AIMS: Colon capsule endoscopy (CCE) is a noninvasive and painless technique used to explore the colon without sedation or air insufflation. We performed a systematic review and meta-analysis to assess the accuracy of CCE in detecting colorectal polyps.
METHODS: The MEDLINE, EMBASE, and SCOPUS databases were searched, from 2006 to 2009, for the terms "colon capsule" and "Pillcam colon"; searches included abstracts. Studies were included that focused on detecting colorectal polyps with CCE and that were verified using within-subject reference colonoscopy. The risk of bias within each study was ascertained according to Quality Assessment of Diagnostic Accuracy in Systematic Reviews recommendations. The per-patient sensitivity and specificity were calculated for polyps of any size and for significant findings (polyps, {\textgreater} or =6 mm in size or {\textgreater}3 in number). Forest plots were produced based on random-effect models. The risk of bias across studies was assessed using the interstudy heterogeneity statistic, meta-regression, and the Egger test.
RESULTS: Eight studies provided data on 837 patients; the prevalences of polyps and significant findings were 57\% and 27.4\%, respectively. CCE sensitivity for polyps of any size and significant findings were 71\% and 68\%, respectively. CCE specificity for polyps of any size and significant findings were 75\% and 82\%, respectively. High levels of heterogeneity (interstudy heterogeneity, {\textgreater}75\%) were not detected. Moderate heterogeneity partially was explained by the different design of individual studies. CCE identified 16 of the 21 cancerous lesions detected by colonoscopy (pooled sensitivity, 76\%).
CONCLUSIONS: CCE sensitivity for polyps and significant findings compares favorably with other noninvasive colorectal cancer screening strategies. CCE specificity is likely to be underestimated because reference colonoscopy examination results are blinded.},
	language = {eng},
	number = {6},
	journal = {Clinical Gastroenterology and Hepatology: The Official Clinical Practice Journal of the American Gastroenterological Association},
	author = {Spada, Cristiano and Hassan, Cesare and Marmo, Riccardo and Petruzziello, Lucio and Riccioni, Maria Elena and Zullo, Angelo and Cesaro, Paola and Pilz, Julia and Costamagna, Guido},
	month = jun,
	year = {2010},
	pmid = {20215066},
	keywords = {Capsule Endoscopy, Colorectal Neoplasms, Female, Humans, Male, Middle Aged, Polyps, Sensitivity and Specificity},
	pages = {516--522},
}

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