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Related Concept Videos

Serum Laboratory Studies, Stool Test, Breath Test01:30

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Gastrointestinal (GI) diagnostic studies are pivotal in confirming, ruling out, diagnosing, or staging various diseases, including cancers. Following diagnosis, allocating time for discussions with the patient and providing informational resources is crucial. Diagnostic assessments of the GI tract often occur in outpatient settings like endoscopy suites or GI labs. Preparation for these tests may include dietary restrictions, fasting, liquid bowel preparations, laxatives, enemas, and the...
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Endoscopic Procedures II: Colonoscopy01:25

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The colon, or large intestine, is the final segment of the digestive system. Its primary functions include absorbing water and vitamins produced by gut bacteria and transforming waste from liquid to solid to form stool. In adults, the large intestine is approximately 5 feet long and consists of four main sections:
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Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy01:26

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This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
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Assessment of the Rectum and Anus01:25

Assessment of the Rectum and Anus

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Evaluating the rectum and anus plays a crucial role in conducting a thorough physical examination of the gastrointestinal system. Although it may be uncomfortable and often embarrassing for the patient, it holds immense diagnostic value, particularly in detecting gastrointestinal diseases and abnormalities. This guide will explain how to perform this assessment using inspection and palpation methods.
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Preventive Healthcare Services01:30

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Preventive healthcare services keep people healthy via frequent check-ups, screening, and counseling. They primarily aid in disease prevention rather than treating an acute or chronic illness. Preventive treatment also keeps individuals productive and energetic, allowing them to work well into their retirement years. Examples of preventive care services include:
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Lower GI Series: Barium Enema01:23

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A Barium Enema, or a lower GI series, is a specialized radiographic examination designed to visualize the lower gastrointestinal tract, specifically the colon and rectum. This procedure is instrumental in diagnosing various conditions such as colorectal cancer, polyps, diverticulosis, and inflammatory bowel disease.
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Updated: Sep 24, 2025

Evaluation of Colorectal Cancer Risk and Prevalence by Stool DNA Integrity Detection
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Screening for Colorectal Cancer.

Samir Gupta1

  • 1GI Section, VA San Diego Healthcare System, Department of Gastroenterology, University of California San Diego, 3350 La Jolla Village Drive, MC 111D, San Diego, CA 92161, USA.

Hematology/Oncology Clinics of North America
|May 2, 2022
PubMed
Summary
This summary is machine-generated.

Colorectal cancer (CRC) screening is vital for reducing deaths. Guidelines recommend starting screening at age 45, with various effective tests available, emphasizing that the best test is the one completed.

Keywords:
Colorectal cancerEarly detectionIncidenceMortalityPreventionScreening

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Area of Science:

  • Oncology
  • Preventive Medicine
  • Gastroenterology

Background:

  • Colorectal cancer (CRC) is a leading cause of cancer mortality in the US.
  • Screening is proven to reduce CRC incidence and mortality.
  • Current guidelines recommend screening for asymptomatic adults.

Purpose of the Study:

  • To summarize current screening recommendations for colorectal cancer.
  • To outline the various screening modalities supported by evidence.
  • To emphasize the importance of adherence to screening protocols.

Main Methods:

  • Review of the 2021 US Preventive Service Task Force (USPSTF) guidelines.
  • Analysis of available evidence supporting different CRC screening tests.
  • Synthesis of recommended screening ages and intervals.

Main Results:

  • Routine CRC screening is recommended for ages 45-75.
  • Individualized screening is considered for ages 76-85.
  • Recommended screening options include fecal occult blood testing (FOBT), fecal immunochemical testing (FIT), multitarget stool DNA-FIT, sigmoidoscopy, computed tomographic colonography, and colonoscopy.

Conclusions:

  • Adherence to recommended CRC screening guidelines is crucial.
  • Multiple screening tests are available, with varying frequencies.
  • The most effective screening strategy is the one patients undergo.