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colon cutoff sign

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The finding of colonic gas in the proximal colon but not in the part distal to the splenic flexure. It may be identified on plain radiography or computer tomographic scanning of the abdomen and is indicative of acute pancreatitis.

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colonic

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(kō-lon′ik, kŏ-lon′ik) [colon + -ic] 1. Pert. to the colon. 2. A common colloquial term for colonic irrigation or enema.

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colonic inertia

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SEE: inertia.

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colonization

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(kŏl″ŏ-nĭ-zā′shŭn) The growth of microorganisms, esp. bacteria, in a particular body site.

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colono-, colon-

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[L. fr. Gr. kolon, large intestine] Prefixes meaning colon.

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colonocyte

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(kŏ-lŏn′ŏ-sīt) [″ + ″] An endothelial cell of the large intestine.

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colonopathy

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(kō″lō-nŏp′ă-thē) [Gr. kolon, colon, + pathos, disease] Any disease of the colon.

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colonoscope

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(kō-lŏn′ō-skōp) [″ + skopein, to examine] An endoscope used to examine the colon. SEE: sigmoidoscope.

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colonoscopy

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(kō″lŏ-nos′kŏ-pē) [colon + -scopy] Visualization of the lower gastrointestinal tract. The procedure usually consists of the insertion of a flexible endoscope through the anus to inspect the entire colon and terminal ileum. The procedure detects polyps in 5% to 10% of screened patients and cancer in about 0.5% to 1.0%. Because these lesions can be removed during the examination, it is a proven, effective means of reducing the risk of death from colorectal cancers. colonoscopic (kō-lon″ŏ-skop′ik), adj. SEE: coloscopy; colon for illus.

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Image not available. About 0.3% to 0.5% of patients who undergo colonoscopy suffer serious complications, such as bowel perforation. The risk increases in older patients.

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surveillance c. A follow-up colonoscopy after an earlier examination revealed a precancerous lesion in the large intestine.

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virtual c. Colography.

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colony

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(kŏl′ ō-nē) [L. colonia] A growth of microorganisms in a culture; usually considered to have grown from a single organism.

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colony-forming unit committed to erythropoiesis

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ABBR: CFU-E. A stem cell derived from a primitive burst-forming-unit that forms red blood cells but not other blood cells.

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colony-stimulating factor-1

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SEE: under factor.

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colopexotomy

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(kō″lō-pĕks-ŏt′ō-mē) [″ + ″ + tome, incision] Incision and fixation of the colon.

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colopexy, colonopexy, colopexia

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(kō′lō-pĕk″sē, -pĕks′ē-ă) Fixation of a segment of the colon onto the abdominal wall.

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coloproctectomy

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(kō″lō-prŏk-tĕk′ tō-mē) [″ + proktos, anus, + ektome, excision] Surgical removal of the colon and rectum.

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coloproctitis

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(kō′lō-prŏk-tī′tĭs) [″ + ″ + itis, inflammation] Colonic and rectal inflammation.

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coloproctostomy

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