Confocal Probe-based Endoscopic Imaging, Colorectal Cancer, Gastrointestinal (GI) Pathologies (ASGE-FNDT-1)
The Role of Endoscopic Confocal Microscopy in Diagnosing Colorectal Cancer and Other Gastrointestinal Pathologies in Vivo
The recently developed endoscopic Confocal probe microscopy system allows imaging of surface epithelium during ongoing endoscopy (upper and lower) with the potential of immediate diagnosis of various GI pre-malignant and malignant lesions. The purpose of this study is to determine if using this new Confocal probe system can find pre-cancerous abnormalities in the stomach and colon.
Hypothesis: The confocal endomicroscopy images of colorectal lesions during the standard colonoscopies could help the classification in vivo of colorectal neoplastic and non-neoplastic lesions. This could direct further endoscopic interventions such as targeted biopsies of early colorectal cancer lesions and the endoscopic resection of such lesions during screening colonoscopies.
Primary Aim
To determine the key confocal image features of neoplastic and pre-neoplastic colorectal lesions including flat and raised adenomatous polyps, intraepithelial neoplasia and cancer as well as benign lesions such as hyperplastic polyps and normal colonic epithelium and to estimate which morphologic features best distinguish neoplastic and non-neoplastic tissues.
Secondary Aims:
- To determine the initial sensitivity and specificity of confocal microendoscopy imaging for classification of adenomatous from hyperplastic polyps of the colon.
In this exploratory phase of the study to develop a library of confocal microendoscopic imaging characteristics of other GI pathologies such as:
- Barrett's esophagus in comparison to Barrett's esophagus with dysplasia, and normal squamous esophagus.
- Other encountered inflammatory and neoplastic conditions within the GI tract in which biopsy or removal of tissue would routinely be indicated.
The second phase of the study will focus on establishing the sensitivities, specificities, accuracy of confocal images of colorectal lesions and other GI pathologies as well as inter-observer agreement and learning curve in interpretation of confocal images.
調査の概要
詳細な説明
研究の種類
入学 (実際)
連絡先と場所
研究場所
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Florida
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Jacksonville、Florida、アメリカ、32224
- Mayo Clinic
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
サンプリング方法
調査対象母集団
説明
Inclusion Criteria:
- Ages 18 to 100
- Any patient undergoing screening and/or surveillance colonoscopy and/or upper endoscopy with possible biopsy or removal of tissue by polypectomy
Exclusion Criteria:
- Unwilling to consent
- Allergy to fluorescein
- Lack of any pathological state that would require biopsy at the time of endoscopy (will be considered "screen failure" since this will not be known until after consent is obtained and sedated endoscopy performed)
- Women of child-bearing age who are sexually active and not practicing an acceptable form of contraception
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 観測モデル:ケースのみ
- 時間の展望:断面図
この研究は何を測定していますか?
主要な結果の測定
結果測定 |
時間枠 |
---|---|
Endoscopic Confocal microscopy may help distinguish small adenomatous polyps with malignant potential from non-neoplastic (hyperplastic) polyps in real- time enabling immediate diagnosis and removal of only polyps with truly malignant potential.
時間枠:one year
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one year
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二次結果の測定
結果測定 |
時間枠 |
---|---|
Endoscopic Confocal microscopy has the potential to fundamentally change the way endoscopy and pathology interact by allowing near histological-quality imaging in vivo, without the need, risk, and cost of tissue removal.
時間枠:one year
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one year
|
協力者と研究者
スポンサー
捜査官
- 主任研究者:Michael B Wallace, M.D.、Mayo Clinic
出版物と役立つリンク
一般刊行物
- Andre B, Vercauteren T, Buchner AM, Krishna M, Ayache N, Wallace MB. Software for automated classification of probe-based confocal laser endomicroscopy videos of colorectal polyps. World J Gastroenterol. 2012 Oct 21;18(39):5560-9. doi: 10.3748/wjg.v18.i39.5560.
- Shahid MW, Buchner A, Gomez V, Krishna M, Woodward TA, Raimondo M, Wallace MB. Diagnostic accuracy of probe-based confocal laser endomicroscopy and narrow band imaging in detection of dysplasia in duodenal polyps. J Clin Gastroenterol. 2012 May-Jun;46(5):382-9. doi: 10.1097/MCG.0b013e318247f375.
- Buchner AM, Shahid MW, Heckman MG, Krishna M, Ghabril M, Hasan M, Crook JE, Gomez V, Raimondo M, Woodward T, Wolfsen HC, Wallace MB. Comparison of probe-based confocal laser endomicroscopy with virtual chromoendoscopy for classification of colon polyps. Gastroenterology. 2010 Mar;138(3):834-42. doi: 10.1053/j.gastro.2009.10.053. Epub 2009 Nov 10.
研究記録日
主要日程の研究
研究開始
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (見積もり)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
その他の研究ID番号
- 07-007521
- ASGE Grant#FNDT-1
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