Editing Colonoscopy (section)

===Other===
During colonoscopies, when a [[Polyp (medicine)|polyp]] is removed (a polypectomy), the risk of complication increases.<ref>{{cite journal |last1=Choo |first1=Wai Kah |last2=Subhani |first2=Javaid |date=2012 |title=Complication rates of colonic polypectomy in relation to polyp characteristics and techniques: a district hospital experience |journal=Journal of Interventional Gastroenterology |volume=2 |issue=1 |pages=8–11 |doi=10.4161/jig.20126 |issn=2154-1280 |pmc=3350902 |pmid=22586542}}</ref><ref>{{cite journal |last1=Tomaszewski |first1=Marcel |last2=Sanders |first2=David |last3=Enns |first3=Robert |last4=Gentile |first4=Laura |last5=Cowie |first5=Scott |last6=Nash |first6=Carla |last7=Petrunia |first7=Denis |last8=Mullins |first8=Paul |last9=Hamm |first9=Jeremy |last10=Azari-Razm |first10=Nazanin |last11=Bykov |first11=Dmitriy |last12=Telford |first12=Jennifer |date=12 October 2021 |title=Risks associated with colonoscopy in a population-based colon screening program: an observational cohort study |journal=CMAJ Open |volume=9 |issue=4 |pages=E940–E947 |doi=10.9778/cmajo.20200192 |issn=2291-0026 |pmc=8513602 |pmid=34642256}}</ref> One of the most serious complications is [[postpolypectomy coagulation syndrome]], occurring in 1 in {{val|1000}} procedures.<ref>{{cite journal |last1=Jehangir |first1=Asad |last2=Bennett |first2=Kyle M. |last3=Rettew |first3=Andrew C. |last4=Fadahunsi |first4=Opeyemi |last5=Shaikh |first5=Bilal |last6=Donato |first6=Anthony |date=19 October 2015 |title=Post-polypectomy electrocoagulation syndrome: a rare cause of acute abdominal pain |journal=Journal of Community Hospital Internal Medicine Perspectives |volume=5 |issue=5 |pages=10.3402/jchimp.v5.29147 |doi=10.3402/jchimp.v5.29147 |issn=2000-9666 |pmc=4612487 |pmid=26486121}}</ref> It results from a burn injury to the wall of the colon causing abdominal pain, fever, elevated white blood cell count and elevated serum [[C-reactive protein]]. Treatment consists of intravenous fluids, antibiotics, and avoiding oral intake of food, water, etc. until symptoms improve. Risk factors include right colon polypectomy, large polyp size (>2&nbsp;cm), non-polypoid lesions (laterally spreading lesions), and hypertension.<ref>{{cite journal | vauthors = Anderloni A, Jovani M, Hassan C, Repici A | title = Advances, problems, and complications of polypectomy | journal = Clinical and Experimental Gastroenterology | volume = 7 | pages = 285–296 | date = 30 August 2014 | pmid = 25210470 | pmc = 4155740 | doi = 10.2147/CEG.S43084 | doi-access = free }}</ref>

Although rare, infections of the colon are a potential colonoscopy risk. The colon is not a [[Sterilization (microbiology)|sterile]] environment, and infections can occur during biopsies from what is essentially a 'small shallow cut', enabling bacterial intrusion into lower parts of the colon wall. In cases where the lining of the colon is perforated, bacteria can infiltrate the [[abdominal cavity]].<ref name="CRisks">{{cite web |url=http://www.colonoscopyrisks.net/bowel-infection.php |title=Bowel Infections |access-date=6 April 2010 |archive-date=2 April 2019 |archive-url=https://web.archive.org/web/20190402163529/http://www.colonoscopyrisks.net/bowel-infection.php |url-status=dead }}</ref>

Minor colonoscopy risks may include [[nausea]], [[vomiting]] or [[allergies]] to the [[sedatives]] that may have been used. If medication is given intravenously, the [[vein]] may become irritated, or mild [[phlebitis]] may occur.<ref name="MediNet">{{cite web |url=http://www.medicinenet.com/colonoscopy/page3.htm#8whatare |title=What to expect after a colonoscopy? |access-date=6 April 2010 |archive-date=9 August 2017 |archive-url=https://web.archive.org/web/20170809074136/http://www.medicinenet.com/colonoscopy/page3.htm#8whatare |url-status=live }}</ref>