Colon polyps classification: Difference between revisions
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==Overview== | ==Overview== | ||
Colon polyps may be classified into two groups of neoplastic and | Colon polyps may be classified into two groups of [[Cancer|neoplastic]] and non-neoplastic. Non-neoplastic polyps consist of [[Inflammation|inflammatory]] and [[Hamartoma|hamartomatous]] polyps. [[Cancer|Neoplastic]] polyps consist of serrated and [[Villous adenoma|adenomatous polyps]]. [[Villous adenoma|Adenomatous polyps]] may be classified into several subtypes based on [[Endoscopy|endoscopic]] and [[Histology|histologic]] features, and degree of [[dysplasia]]. [[Adenoma|Adenomas]] may be classified according to [[Endoscopy|endoscopic]] features into four groups including [[sessile]], [[pedunculated]], flat, or depressed. [[Adenoma|Adenomas]] may be classified according to [[Histology|histologic]] features into three groups including tubular, tubulovillous, and [[Villous adenoma|villous]]. | ||
==Classification== | ==Classification== | ||
*Colon polyps may be classified into several subtypes based on:<ref name="ShussmanWexner2014">{{cite journal|last1=Shussman|first1=N.|last2=Wexner|first2=S. D.|title=Colorectal polyps and polyposis syndromes|journal=Gastroenterology Report|volume=2|issue=1|year=2014|pages=1–15|issn=2052-0034|doi=10.1093/gastro/got041}}</ref><ref name="pmid17516746">{{cite journal |vauthors=Li SC, Burgart L |title=Histopathology of serrated adenoma, its variants, and differentiation from conventional adenomatous and hyperplastic polyps |journal=Arch. Pathol. Lab. Med. |volume=131 |issue=3 |pages=440–5 |year=2007 |pmid=17516746 |doi=10.1043/1543-2165(2007)131[440:HOSAIV]2.0.CO;2 |url=}}</ref><ref name="Bonnington2016">{{cite journal|last1=Bonnington|first1=Stewart N|title=Surveillance of colonic polyps: Are we getting it right?|journal=World Journal of Gastroenterology|volume=22|issue=6|year=2016|pages=1925|issn=1007-9327|doi=10.3748/wjg.v22.i6.1925}}</ref><ref name="PonugotiLin2017">{{cite journal|last1=Ponugoti|first1=Prasanna|last2=Lin|first2=Jingmei|last3=Odze|first3=Robert|last4=Snover|first4=Dale|last5=Kahi|first5=Charles|last6=Rex|first6=Douglas K.|title=Prevalence of sessile serrated adenoma/polyp in hyperplastic-appearing diminutive rectosigmoid polyps|journal=Gastrointestinal Endoscopy|volume=85|issue=3|year=2017|pages=622–627|issn=00165107|doi=10.1016/j.gie.2016.10.022}}</ref><ref name="O'Brien2007">{{cite journal|last1=O'Brien|first1=Michael J.|title=Hyperplastic and Serrated Polyps of the Colorectum|journal=Gastroenterology Clinics of North America|volume=36|issue=4|year=2007|pages=947–968|issn=08898553|doi=10.1016/j.gtc.2007.08.007}}</ref> | *Colon polyps may be classified into several subtypes based on:<ref name="ShussmanWexner2014">{{cite journal|last1=Shussman|first1=N.|last2=Wexner|first2=S. D.|title=Colorectal polyps and polyposis syndromes|journal=Gastroenterology Report|volume=2|issue=1|year=2014|pages=1–15|issn=2052-0034|doi=10.1093/gastro/got041}}</ref><ref name="pmid17516746">{{cite journal |vauthors=Li SC, Burgart L |title=Histopathology of serrated adenoma, its variants, and differentiation from conventional adenomatous and hyperplastic polyps |journal=Arch. Pathol. Lab. Med. |volume=131 |issue=3 |pages=440–5 |year=2007 |pmid=17516746 |doi=10.1043/1543-2165(2007)131[440:HOSAIV]2.0.CO;2 |url=}}</ref><ref name="Bonnington2016">{{cite journal|last1=Bonnington|first1=Stewart N|title=Surveillance of colonic polyps: Are we getting it right?|journal=World Journal of Gastroenterology|volume=22|issue=6|year=2016|pages=1925|issn=1007-9327|doi=10.3748/wjg.v22.i6.1925}}</ref><ref name="PonugotiLin2017">{{cite journal|last1=Ponugoti|first1=Prasanna|last2=Lin|first2=Jingmei|last3=Odze|first3=Robert|last4=Snover|first4=Dale|last5=Kahi|first5=Charles|last6=Rex|first6=Douglas K.|title=Prevalence of sessile serrated adenoma/polyp in hyperplastic-appearing diminutive rectosigmoid polyps|journal=Gastrointestinal Endoscopy|volume=85|issue=3|year=2017|pages=622–627|issn=00165107|doi=10.1016/j.gie.2016.10.022}}</ref><ref name="O'Brien2007">{{cite journal|last1=O'Brien|first1=Michael J.|title=Hyperplastic and Serrated Polyps of the Colorectum|journal=Gastroenterology Clinics of North America|volume=36|issue=4|year=2007|pages=947–968|issn=08898553|doi=10.1016/j.gtc.2007.08.007}}</ref> | ||
** Malignancy potentials | ** [[Cancer|Malignancy]] potentials | ||
** Endoscopic features | ** [[Endoscopy|Endoscopic]] features | ||
** Histologic features | ** [[Histology|Histologic]] features | ||
** Degree of dysplasia | ** Degree of [[dysplasia]] | ||
'''Colon polyps may be classified according to the NBI International Colorectal Endoscopic (NICE) classification into two types:<ref name="HewettKaltenbach2012">{{cite journal|last1=Hewett|first1=David G.|last2=Kaltenbach|first2=Tonya|last3=Sano|first3=Yasushi|last4=Tanaka|first4=Shinji|last5=Saunders|first5=Brian P.|last6=Ponchon|first6=Thierry|last7=Soetikno|first7=Roy|last8=Rex|first8=Douglas K.|title=Validation of a Simple Classification System for Endoscopic Diagnosis of Small Colorectal Polyps Using Narrow-Band Imaging|journal=Gastroenterology|volume=143|issue=3|year=2012|pages=599–607.e1|issn=00165085|doi=10.1053/j.gastro.2012.05.006}}</ref><ref name="RameshshankerWilson2016">{{cite journal|last1=Rameshshanker|first1=R.|last2=Wilson|first2=Ana|title=Electronic Imaging in Colonoscopy: Clinical Applications and Future Prospects|journal=Current Treatment Options in Gastroenterology|volume=14|issue=1|year=2016|pages=140–151|issn=1092-8472|doi=10.1007/s11938-016-0075-1}}</ref>''' | |||
{| class="wikitable" | {| class="wikitable" | ||
!NICE criterion | !NICE criterion | ||
| Line 22: | Line 22: | ||
|Darker background | |Darker background | ||
|- | |- | ||
|Vessels | |[[Blood vessel|Vessels]] | ||
|None, or isolated lacy vessels coursing across the lesion | |None, or isolated lacy [[Blood vessel|vessels]] coursing across the [[lesion]] | ||
|Brown vessels surrounding the white center | |Brown [[Blood vessel|vessels]] surrounding the white center | ||
|- | |- | ||
|Surface | |Surface | ||
| Line 30: | Line 30: | ||
|Oval, tubular, or branched white structures | |Oval, tubular, or branched white structures | ||
|- | |- | ||
|Probable pathology | |Probable [[pathology]] | ||
|Hyperplastic | |[[Hyperplasia|Hyperplastic]] | ||
|Adenoma | |[[Adenoma]] | ||
|} | |} | ||
'''Colon polyps may be classified according to [[Cancer|malignancy]] potentials into two large groups:''' | |||
*Non-neoplastic | |||
**[[Inflammation|Inflammatory]] polyps | |||
***[[Inflammation|Inflammatory]] [[Pseudopolyp|pseudopolyps]] | |||
***[[Prolapse]] type [[Inflammation|inflammatory]] polyps | |||
***Myoglandular polyps | |||
**[[Hamartoma|Hamartomatous]] polyps | |||
***Juvenile polyps | |||
***[[Peutz-Jeghers syndrome]] | |||
***Cronkhite-Canada syndrome | |||
***Phosphatase and tensin homolog (PTEN) hamartoma tumor syndrome | |||
*[[Cancer|Neoplastic]] | |||
**Serrated polyps | |||
***[[Hyperplasia|Hyperplastic]] polyps | |||
***Traditional serrated adenomas | |||
***[[Sessile]] serrated polyps | |||
***Serrated polyposis syndrome | |||
** | **[[Villous adenoma|Adenomatous polyps]] | ||
'''[[Adenoma|Adenomas]] may be classified according to [[Endoscopy|endoscopic]] features into four groups:''' | |||
* | *[[Sessile]] | ||
* | *[[Pedunculated]] | ||
*Flat | |||
*Depressed | |||
'''[[Adenoma|Adenomas]] may be classified according to [[Histology|histologic]] features into three groups:''' | |||
* Tubular | |||
* Villous | |||
* Tubulovillous | |||
'''[[Adenoma|Adenomas]] may be classified according to degree of [[dysplasia]] into two groups:''' | |||
* Low-grade [[dysplasia]] | |||
* High-grade [[dysplasia]] | |||
==References== | ==References== | ||
{{Reflist|2}} | {{Reflist|2}} | ||
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[[Category: | |||
[[Category:Medicine]] | |||
[[Category:Gastroenterology]] | |||
[[Category:Up-To-Date]] | |||
Latest revision as of 21:00, 29 July 2020
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Colon polyps classification On the Web |
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Risk calculators and risk factors for Colon polyps classification |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sadaf Sharfaei M.D.[2]
Overview
Colon polyps may be classified into two groups of neoplastic and non-neoplastic. Non-neoplastic polyps consist of inflammatory and hamartomatous polyps. Neoplastic polyps consist of serrated and adenomatous polyps. Adenomatous polyps may be classified into several subtypes based on endoscopic and histologic features, and degree of dysplasia. Adenomas may be classified according to endoscopic features into four groups including sessile, pedunculated, flat, or depressed. Adenomas may be classified according to histologic features into three groups including tubular, tubulovillous, and villous.
Classification
- Colon polyps may be classified into several subtypes based on:[1][2][3][4][5]
- Malignancy potentials
- Endoscopic features
- Histologic features
- Degree of dysplasia
Colon polyps may be classified according to the NBI International Colorectal Endoscopic (NICE) classification into two types:[6][7]
| NICE criterion | Type 1 | Type 2 |
|---|---|---|
| Color | Same or lighter background | Darker background |
| Vessels | None, or isolated lacy vessels coursing across the lesion | Brown vessels surrounding the white center |
| Surface | Circular pattern with dark or white small spots surrounded by lighter mucosa | Oval, tubular, or branched white structures |
| Probable pathology | Hyperplastic | Adenoma |
Colon polyps may be classified according to malignancy potentials into two large groups:
- Non-neoplastic
- Inflammatory polyps
- Inflammatory pseudopolyps
- Prolapse type inflammatory polyps
- Myoglandular polyps
- Hamartomatous polyps
- Juvenile polyps
- Peutz-Jeghers syndrome
- Cronkhite-Canada syndrome
- Phosphatase and tensin homolog (PTEN) hamartoma tumor syndrome
- Inflammatory polyps
- Neoplastic
- Serrated polyps
- Hyperplastic polyps
- Traditional serrated adenomas
- Sessile serrated polyps
- Serrated polyposis syndrome
- Adenomatous polyps
- Serrated polyps
Adenomas may be classified according to endoscopic features into four groups:
- Sessile
- Pedunculated
- Flat
- Depressed
Adenomas may be classified according to histologic features into three groups:
- Tubular
- Villous
- Tubulovillous
Adenomas may be classified according to degree of dysplasia into two groups:
References
- ↑ Shussman, N.; Wexner, S. D. (2014). "Colorectal polyps and polyposis syndromes". Gastroenterology Report. 2 (1): 1–15. doi:10.1093/gastro/got041. ISSN 2052-0034.
- ↑ Li SC, Burgart L (2007). "Histopathology of serrated adenoma, its variants, and differentiation from conventional adenomatous and hyperplastic polyps". Arch. Pathol. Lab. Med. 131 (3): 440–5. doi:10.1043/1543-2165(2007)131[440:HOSAIV]2.0.CO;2. PMID 17516746.
- ↑ Bonnington, Stewart N (2016). "Surveillance of colonic polyps: Are we getting it right?". World Journal of Gastroenterology. 22 (6): 1925. doi:10.3748/wjg.v22.i6.1925. ISSN 1007-9327.
- ↑ Ponugoti, Prasanna; Lin, Jingmei; Odze, Robert; Snover, Dale; Kahi, Charles; Rex, Douglas K. (2017). "Prevalence of sessile serrated adenoma/polyp in hyperplastic-appearing diminutive rectosigmoid polyps". Gastrointestinal Endoscopy. 85 (3): 622–627. doi:10.1016/j.gie.2016.10.022. ISSN 0016-5107.
- ↑ O'Brien, Michael J. (2007). "Hyperplastic and Serrated Polyps of the Colorectum". Gastroenterology Clinics of North America. 36 (4): 947–968. doi:10.1016/j.gtc.2007.08.007. ISSN 0889-8553.
- ↑ Hewett, David G.; Kaltenbach, Tonya; Sano, Yasushi; Tanaka, Shinji; Saunders, Brian P.; Ponchon, Thierry; Soetikno, Roy; Rex, Douglas K. (2012). "Validation of a Simple Classification System for Endoscopic Diagnosis of Small Colorectal Polyps Using Narrow-Band Imaging". Gastroenterology. 143 (3): 599–607.e1. doi:10.1053/j.gastro.2012.05.006. ISSN 0016-5085.
- ↑ Rameshshanker, R.; Wilson, Ana (2016). "Electronic Imaging in Colonoscopy: Clinical Applications and Future Prospects". Current Treatment Options in Gastroenterology. 14 (1): 140–151. doi:10.1007/s11938-016-0075-1. ISSN 1092-8472.