Colorectal adenoma: Difference between revisions
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{{Infobox medical condition | |||
| name = Colorectal adenoma | |||
| image = [[File:Tubulovillous_adenoma.jpg|left|thumb|Tubulovillous adenoma]] | |||
| caption = Histopathological image of a tubulovillous adenoma of the colon | |||
| field = [[Gastroenterology]] | |||
| synonyms = [[Adenomatous polyp]] | |||
| symptoms = Often asymptomatic, may cause [[rectal bleeding]] | |||
| complications = [[Colorectal cancer]] | |||
| onset = Typically in adults over 50 | |||
| duration = Can persist until removed | |||
| types = [[Tubular adenoma]], [[Villous adenoma]], [[Tubulovillous adenoma]] | |||
| causes = [[Genetic mutations]], [[dietary factors]] | |||
| risks = [[Age]], [[family history]], [[diet high in red meat]] | |||
| diagnosis = [[Colonoscopy]], [[biopsy]] | |||
| differential = [[Hyperplastic polyp]], [[inflammatory polyp]] | |||
| prevention = [[Regular screening]], [[dietary changes]] | |||
| treatment = [[Polypectomy]], [[surgical resection]] | |||
| prognosis = Good if removed early | |||
| frequency = Common in adults over 50 | |||
}} | |||
'''Colorectal adenoma''' is a type of [[polyp]] that is found in the [[colon]] or [[rectum]]. Colorectal adenomas are considered [[precancerous]] conditions, as they can develop into [[colorectal cancer]] if left untreated. | '''Colorectal adenoma''' is a type of [[polyp]] that is found in the [[colon]] or [[rectum]]. Colorectal adenomas are considered [[precancerous]] conditions, as they can develop into [[colorectal cancer]] if left untreated. | ||
==Types of Colorectal Adenoma== | ==Types of Colorectal Adenoma== | ||
There are three main types of colorectal adenomas: tubular adenomas, villous adenomas, and tubulovillous adenomas. | There are three main types of colorectal adenomas: tubular adenomas, villous adenomas, and tubulovillous adenomas. | ||
* '''[[Tubular adenoma]]''' is the most common type of colorectal adenoma. It is typically small and has a lower risk of becoming cancerous compared to other types of adenomas. | * '''[[Tubular adenoma]]''' is the most common type of colorectal adenoma. It is typically small and has a lower risk of becoming cancerous compared to other types of adenomas. | ||
* '''[[Villous adenoma]]''' is less common but more likely to become cancerous. It is often larger and has a villous or "finger-like" appearance under the microscope. | * '''[[Villous adenoma]]''' is less common but more likely to become cancerous. It is often larger and has a villous or "finger-like" appearance under the microscope. | ||
* '''[[Tubulovillous adenoma]]''' is a mix of tubular and villous adenoma. It has an intermediate risk of becoming cancerous. | * '''[[Tubulovillous adenoma]]''' is a mix of tubular and villous adenoma. It has an intermediate risk of becoming cancerous. | ||
==Risk Factors== | ==Risk Factors== | ||
Several factors can increase the risk of developing colorectal adenomas. These include age, a history of colorectal adenomas or colorectal cancer, certain genetic syndromes such as [[Lynch syndrome]] and [[Familial adenomatous polyposis]], and lifestyle factors such as diet, smoking, and lack of physical activity. | Several factors can increase the risk of developing colorectal adenomas. These include age, a history of colorectal adenomas or colorectal cancer, certain genetic syndromes such as [[Lynch syndrome]] and [[Familial adenomatous polyposis]], and lifestyle factors such as diet, smoking, and lack of physical activity. | ||
==Diagnosis== | ==Diagnosis== | ||
Colorectal adenomas are often found during a [[colonoscopy]] or [[sigmoidoscopy]]. If an adenoma is found, it is usually removed and sent to a lab for testing. The lab can confirm whether the polyp is an adenoma and whether it has any signs of cancer. | Colorectal adenomas are often found during a [[colonoscopy]] or [[sigmoidoscopy]]. If an adenoma is found, it is usually removed and sent to a lab for testing. The lab can confirm whether the polyp is an adenoma and whether it has any signs of cancer. | ||
==Treatment== | ==Treatment== | ||
The primary treatment for colorectal adenomas is removal during a colonoscopy or sigmoidoscopy. This is usually done using a procedure called a polypectomy. In some cases, if the adenoma is very large or if there are many adenomas, surgery may be needed. | The primary treatment for colorectal adenomas is removal during a colonoscopy or sigmoidoscopy. This is usually done using a procedure called a polypectomy. In some cases, if the adenoma is very large or if there are many adenomas, surgery may be needed. | ||
==Prevention== | ==Prevention== | ||
Prevention strategies for colorectal adenomas include regular screening with colonoscopy or sigmoidoscopy, maintaining a healthy diet, regular physical activity, and avoiding smoking. | Prevention strategies for colorectal adenomas include regular screening with colonoscopy or sigmoidoscopy, maintaining a healthy diet, regular physical activity, and avoiding smoking. | ||
==Gallery== | |||
<gallery> | |||
File:Tubulovillous_adenoma.jpg|Tubulovillous adenoma | |||
File:Pie_chart_of_colorectal_polyp_etiologies.png|Pie chart of colorectal polyp etiologies | |||
File:Non-proliferative_versus_proliferative_colonic_crypts.jpg|Non-proliferative versus proliferative colonic crypts | |||
File:Histopathology_of_high-grade_dysplasia_in_tubulovillous_adenoma,_annotated.png|Histopathology of high-grade dysplasia in tubulovillous adenoma, annotated | |||
File:Villous_adenoma1.jpg|Villous adenoma | |||
File:Sessile_serrated_adenoma_3_very_high_mag.jpg|Sessile serrated adenoma, very high magnification | |||
</gallery> | |||
==See Also== | ==See Also== | ||
* [[Colorectal cancer]] | * [[Colorectal cancer]] | ||
* [[Colonoscopy]] | * [[Colonoscopy]] | ||
| Line 34: | Line 49: | ||
* [[Lynch syndrome]] | * [[Lynch syndrome]] | ||
* [[Familial adenomatous polyposis]] | * [[Familial adenomatous polyposis]] | ||
[[Category:Gastrointestinal neoplasia]] | [[Category:Gastrointestinal neoplasia]] | ||
[[Category:Colorectal surgery]] | [[Category:Colorectal surgery]] | ||
[[Category:Histopathology]] | [[Category:Histopathology]] | ||
{{Medicine-stub}} | {{Medicine-stub}} | ||
Latest revision as of 02:19, 5 April 2025
Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
Founder, WikiMD Wellnesspedia &
W8MD's medical weight loss NYC, sleep center NYC
Philadelphia medical weight loss and Philadelphia sleep clinics
| Colorectal adenoma | |
|---|---|
| Synonyms | Adenomatous polyp |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Often asymptomatic, may cause rectal bleeding |
| Complications | Colorectal cancer |
| Onset | Typically in adults over 50 |
| Duration | Can persist until removed |
| Types | Tubular adenoma, Villous adenoma, Tubulovillous adenoma |
| Causes | Genetic mutations, dietary factors |
| Risks | Age, family history, diet high in red meat |
| Diagnosis | Colonoscopy, biopsy |
| Differential diagnosis | Hyperplastic polyp, inflammatory polyp |
| Prevention | Regular screening, dietary changes |
| Treatment | Polypectomy, surgical resection |
| Medication | N/A |
| Prognosis | Good if removed early |
| Frequency | Common in adults over 50 |
| Deaths | N/A |
Colorectal adenoma is a type of polyp that is found in the colon or rectum. Colorectal adenomas are considered precancerous conditions, as they can develop into colorectal cancer if left untreated.
Types of Colorectal Adenoma[edit]
There are three main types of colorectal adenomas: tubular adenomas, villous adenomas, and tubulovillous adenomas.
- Tubular adenoma is the most common type of colorectal adenoma. It is typically small and has a lower risk of becoming cancerous compared to other types of adenomas.
- Villous adenoma is less common but more likely to become cancerous. It is often larger and has a villous or "finger-like" appearance under the microscope.
- Tubulovillous adenoma is a mix of tubular and villous adenoma. It has an intermediate risk of becoming cancerous.
Risk Factors[edit]
Several factors can increase the risk of developing colorectal adenomas. These include age, a history of colorectal adenomas or colorectal cancer, certain genetic syndromes such as Lynch syndrome and Familial adenomatous polyposis, and lifestyle factors such as diet, smoking, and lack of physical activity.
Diagnosis[edit]
Colorectal adenomas are often found during a colonoscopy or sigmoidoscopy. If an adenoma is found, it is usually removed and sent to a lab for testing. The lab can confirm whether the polyp is an adenoma and whether it has any signs of cancer.
Treatment[edit]
The primary treatment for colorectal adenomas is removal during a colonoscopy or sigmoidoscopy. This is usually done using a procedure called a polypectomy. In some cases, if the adenoma is very large or if there are many adenomas, surgery may be needed.
Prevention[edit]
Prevention strategies for colorectal adenomas include regular screening with colonoscopy or sigmoidoscopy, maintaining a healthy diet, regular physical activity, and avoiding smoking.
Gallery[edit]
-
Tubulovillous adenoma
-
Pie chart of colorectal polyp etiologies
-
Non-proliferative versus proliferative colonic crypts
-
Histopathology of high-grade dysplasia in tubulovillous adenoma, annotated
-
Villous adenoma
-
Sessile serrated adenoma, very high magnification
See Also[edit]
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