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How to Measure Detection Rate During Colonoscopy: PDR, ADR, SDR, or All Three?

  • Endoscopy (P Siersema, Section Editor)
  • Published:
Current Treatment Options in Gastroenterology Aims and scope Submit manuscript

Abstract

Purpose of review

Our aim was to clarify the respective role and significance of the adenoma detection rate (ADR) among other colonoscopy detection metrics such as the polyp detection rate (PDR) or the serrated polyp detection rate (SDR).

Recent findings

PDR is easy to measure, but affected by the resection of hyperplastic lesions in the distal colon, or non-neoplastic colorectal mucosa, and cannot be considered a reliable detection metric. The use of SDR is limited by the heterogeneity of the serrated lesions. In 2021, the ADR remains sole recommended detection metric, inversely correlated to interval colorectal cancer and death, and correlated to most other colonoscopy detection metrics.

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Abbreviations

ADR:

Adenoma detection rate

AADR:

Advanced adenoma detection rate

APC:

Mean number of adenomas per colonoscopy

APP:

Adenomas per positive participant

CRC:

Colorectal cancer

PDR:

Polyp detection rate

SDR:

Serrated polyp detection rate

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Authors and Affiliations

  1. Department of Gastroenterology and Digestive Oncology, Cochin Hospital, Assistance Publique - Hôpitaux de Paris, 27 Rue du Faubourg Saint Jacques, 75014, Paris, France

    Einas Abou Ali MD & Maximilien Barret MD, PhD

  2. University of Paris, Paris, France

    Einas Abou Ali MD & Maximilien Barret MD, PhD

Authors
  1. Einas Abou Ali MD
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  2. Maximilien Barret MD, PhD
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Correspondence to Maximilien Barret MD, PhD.

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Einas Abou Ali declares no conflict of interest.

Maximilien Barret declares personal fees from Norgine and personal fees from Medtronic, outside the submitted work.

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Abou Ali, E., Barret, M. How to Measure Detection Rate During Colonoscopy: PDR, ADR, SDR, or All Three?. Curr Treat Options Gastro 19, 266–276 (2021). https://doi.org/10.1007/s11938-021-00338-x

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