Gastroenterology Book

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Colonic Polyp

Aka: Colonic Polyp, Adenomatous Colonic Polyp, Hyperplastic Colonic Polyp, Sessile Serrated Adenomatous Colonic Polyp
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  1. Types
    1. Benign
      1. Hyperplastic Colonic Polyp (except the higher risk, hyperplastic polyposis syndrome)
      2. Inflammatory Colonic Polyp
    2. Malignant Potential (require complete excision and close interval follow-up)
      1. Adenomatous Colonic Polyp
      2. Sessile Serrated Adenomatous Colonic Polyp
  2. Interpretation
    1. Factors suggesting higher risk of future adenomatous polyp
      1. Three or more adenomatous polyps
      2. Adenomatous polyp >1 cm
      3. Polyp biopsy consistent with high grade or villous changes
    2. Factors suggesting lower risk of future adenomatous polyp
      1. High quality baseline exam (see Colon Cancer Screening with Colonoscopy)
      2. Fewer than 3 adenomatous polyps
      3. Small adenomatous polyps <1 cm
      4. No high grade or villous changes
      5. Adenomatous polyps removed completely (not piecemeal)
    3. References
      1. Atkin (1992) N Engl J Med 326:658-62
  3. Evaluation: Post-polypectomy Surveillance
    1. Small colorectal hyperplastic polyps (except hyperplastic polyposis syndrome)
      1. Next Colonoscopy in 10 years (same as general population)
    2. Small tubular adenomas (<1 cm), few (1-2) and low-grade dysplasia
      1. Next Colonoscopy in 5-10 years
    3. Numerous adenomas (3-10) or larger adenoma (>1 cm) or high grade dysplasia
      1. Polyp removed completely
        1. Subsequent Colonoscopy #1: 3 years
        2. Subsequent Colonoscopy #2: 5 years
          1. As long as Colonoscopy #1 showed only 1-2, small (<1 cm) low grade lesions
      2. Polyp removed piecemeal
        1. Subsequent Colonoscopy #1: 2-6 months
        2. Subsequent Colonoscopy #2: Per endoscopists discretion
    4. References
      1. Winawer (2006) Ca Cancer J Clin 56:143-59
  4. Management: Sessile Serrated Adenomatous Colonic Polyp
    1. Newly defined as serrated hyperplastic polyp
    2. Must be completely excised and monitored as with adenomatous polyps
    3. Characteristics
      1. Typically larger than 1 cm
      2. Occurs in right colon in 75% of patients
      3. More common in women (65%)
      4. Accounts for 9% of all Colonic Polyps
    4. References
      1. Larson (2008) Mayo Selected Topics in Internal Medicine, Lecture
      2. Snover (2005) Am J Clin Path 124:380
      3. Spring (2006) Gastroenterology 131: 1400-7

Colonic Polyps (C0009376)

Definition (CHV) an extra piece of tissue that grows in the large intestine, or colon
Definition (CHV) an extra piece of tissue that grows in the large intestine, or colon
Definition (CHV) an extra piece of tissue that grows in the large intestine, or colon
Definition (CHV) an extra piece of tissue that grows in the large intestine, or colon
Definition (CHV) an extra piece of tissue that grows in the large intestine, or colon
Definition (MEDLINEPLUS)

A polyp is an extra piece of tissue that grows inside your body. Colonic polyps grow in the large intestine, or colon. Most polyps are not dangerous. However, some polyps may turn into cancer or already be cancer. To be safe, doctors remove polyps and test them. Polyps can be removed when a doctor examines the inside of the large intestine during a colonoscopy.

Anyone can get polyps, but certain people are more likely than others. You may have a greater chance of getting polyps if you

  • Are over age 50
  • Have had polyps before
  • Have a family member with polyps
  • Have a family history of colon cancer

Most colon polyps do not cause symptoms. If you have symptoms, they may include blood on your underwear or on toilet paper after a bowel movement, blood in your stool, or constipation or diarrhea lasting more than a week.

NIH: National Institute of Diabetes and Digestive Diseases
Definition (NCI) Abnormal growths of tissue in the lining of the bowel. Polyps are a risk factor for colon cancer.
Definition (CSP) adenomatous colon polyps are considered to be precursor lesions of colon cancer.
Definition (MSH) Discrete tissue masses that protrude into the lumen of the COLON. These POLYPS are connected to the wall of the colon either by a stalk, pedunculus, or by a broad base.
Definition (NCI) This is a descriptive term referring of a mass of tissue that bulges or projects into the lumen of the colon. The mass is macroscopically visible and may either have a broad base attachment to the colon wall, or be on a pedunculated stalk. These may be benign or malignant.
Concepts Anatomical Abnormality (T190)
MSH D003111
ICD10 K63.5
SnomedCT 68496003, 188828009
English COLONIC POLYP, COLON POLYP, Polyp, Colonic, Polyps, Colonic, Polyp of colon, NOS, Colonic polyp, NOS, Colonic polyps, colonic polyps, Colon polyps, COLON NOS POLYP, Colonic Polyps [Disease/Finding], Colonic Polyps, colon polyps, Polyp(s);colon, polyp of colon, colon polyp, Colonic polyp(s) (diagnosis), Colonic polyp, Polyp of colon, Polyp of colon (disorder), colon; polyp, polyp; colon, Colon polyp, Colonic Polyp, Colon Polyp, Polyp of Colon, Polyp of the Colon, colonic polyp
Italian Polipo del colon, Polipo (i) del colon (diagnosi), Polipi del colon
Japanese 結腸ポリープ, ｹｯﾁｮｳﾎﾟﾘｰﾌﾟ
Swedish Tjocktarmspolyper
Czech kolon - polypy, Polyp tračníku
Spanish Colonic polyp, Colon polyp, pólipo colónico, pólipo de colon (trastorno), pólipo de colon, Pólipo de colon, Polipos Colonicos, Pólipos del Colon, Polipos Colónicos, Polipos del Colon
Finnish Koolonpolyypit
Russian OBODOCHNOI KISHKI POLIPY, ОБОДОЧНОЙ КИШКИ ПОЛИПЫ
Korean 결장의 폴립
Croatian KOLON, POLIPI
Polish Polipy okrężnicy
Hungarian Colon polyp
French Polype du colon, Polype(s) du colon (diagnostic), Polype du côlon, Polype colique, Polypes coliques, Polypes du côlon
Dutch colon; poliep, poliep; colon, Poliep van colon, colonpoliep, Colonpoliep, Poliep van de dikke darm, Poliep, colon-
Portuguese Pólipo do cólon, Pólipos Colônicos, Pólipos do Cólon, Pólipos do Colo
German Kolonpolyp, Kolonpolypen
Sources
Derived from the NIH UMLS (Unified Medical Language System)


Adenomatous polyp of colon (C0850572)

Concepts Neoplastic Process (T191)
SnomedCT 428054006
English COLON, ADENOMATOUS POLYP, Colon Adenoma, Colonic Adenoma, Adenomatous colonic polyps, Adenomatous polyp of colon (disorder), Adenomatous polyp of colon, COLON NOS POLYP ADENOMATOUS, Colon adenomatous polyp, Adenoma;colon, colon (non-specific) polyp adenomatous, adenoma colon, adenomas colon, colon adenoma, adenomatous colon polyps, Colon adenoma, Colon Adenomatous Polyp, Colonic Adenomatous Polyp, Adenoma of Colon, Adenoma of the Colon, Adenomatous Polyp of Colon, Adenomatous Polyp of the Colon, adenoma of the colon
Italian Adenoma del colon, Polipo adenomatoso del colon
Spanish pólipo adenomatoso de colon, pólipo adenomatoso de colon (trastorno), Pólipo adenomatoso en colon, Adenoma de colon
Czech Adenom tlustého střeva, Adenomatózní polyp tlustého střeva
Japanese 大腸腺腫, ﾀﾞｲﾁｮｳｾﾝｼｭ, ﾀﾞｲﾁｮｳｾﾝｼｭｾｲﾎﾟﾘｰﾌﾟ, 大腸腺腫性ポリープ
Portuguese Pólipo adenomatoso do cólon, Adenoma do cólon
French Polype adénomateux du côlon, Adénome du côlon
German Adenomatoeser Polyp des Color, Kolonadenom
Dutch adenomateuze colonpoliep, colonadenoom
Hungarian Vastagbél adenoma, Vastagbél adenomatosus polyp
Sources
Derived from the NIH UMLS (Unified Medical Language System)


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