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Related Concept Videos

Assessment of the Rectum and Anus01:25

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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.
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
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Is There a Difference in Adenoma Detection Rates According to Indication? An Experience in a Panamanian Colorectal

Julio Zuniga Cisneros1, Carlos Tunon2, Enrique Adames1,2

  • 1School of Medicine, University of Panama, Panama City, Panama.

Gastroenterology Research
|May 15, 2023
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Summary

Colorectal cancer screening shows higher polyp detection rates (PDR) and adenoma detection rates (ADR) compared to non-screening colonoscopies. These findings highlight the importance of indication in colonoscopy quality metrics.

Keywords:
Adenoma detection rateColonoscopyPolyp detection rateSerrated polyp detection rate

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Area of Science:

  • Gastroenterology
  • Oncology
  • Medical Diagnostics

Background:

  • The efficacy of colorectal cancer screening in reducing mortality remains under investigation.
  • Colonoscopy quality is influenced by various factors, including detection rates.
  • Understanding factors affecting polyp detection is crucial for improving screening effectiveness.

Purpose of the Study:

  • To determine if colonoscopy indication (screening vs. non-screening) impacts polyp detection rate (PDR) and adenoma detection rate (ADR).
  • To identify factors associated with detecting polyps and adenomatous polyps during colonoscopy.

Main Methods:

  • Retrospective review of 1,494 colonoscopies (January 2018 - January 2019) in patients aged 50+.
  • Stratification of colonoscopies into screening and non-screening indications.
  • Calculation of PDR, ADR, and serrated polyp detection rate (SDR); logistic regression analysis for associated factors.

Main Results:

  • Non-screening group had lower PDR (25%) and ADR (13%) compared to the screening group (33% and 17%, respectively; P=0.005 for both).
  • Serrated polyp detection rate (SDR) was not significantly different between groups (9% vs 11%; P=0.53).
  • Logistic regression identified factors associated with polyp and adenoma detection.

Conclusions:

  • Colonoscopy indication significantly influences PDR and ADR.
  • Differences in detection rates may be attributable to endoscopist-related factors, scheduling, patient population, and external influences.
  • Further research is needed to optimize colonoscopy quality and colorectal cancer screening protocols.