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CT Colonography: an update on current and future indications.

Andrea Laghi1

  • 1a Department of Radiological Sciences, Oncology and Pathology , Sapienza - University of Rome, ICOT Hospital , Latina , Italy.

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|January 19, 2016
PubMed
Summary

Computed tomographic colonography (CTC) offers diagnostic performance comparable to colonoscopy for colorectal cancer and large polyps. Understanding its role optimizes patient care, especially when colonoscopy is not feasible.

Keywords:
CT Colonography contraindicationsComputed tomography colonographycolonic stomacolorectal cancer screeningdeep pelvic endometriosisdiverticular diseaseelderly patientsincomplete colonoscopysurveillancevirtual colonoscopy

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Area of Science:

  • Medical Imaging
  • Gastroenterology
  • Radiology

Background:

  • Computed tomographic colonography (CTC) is a minimally invasive imaging technique for the colon.
  • Evidence suggests CTC's diagnostic performance for colorectal cancer and large polyps is comparable to colonoscopy (CS).

Purpose of the Study:

  • To clarify the optimal role of CTC in colonic diagnostics.
  • To guide clinicians and patients in maximizing CTC benefits and minimizing potential disappointments.

Main Methods:

  • Review and synthesis of existing literature on CTC diagnostic performance.
  • Comparison of CTC with colonoscopy (CS) and barium enema for colorectal cancer and polyp detection.

Main Results:

  • CTC demonstrates diagnostic accuracy similar to CS for colorectal cancer and large polyps.
  • CTC is superior to barium enema for colonic imaging.
  • Established indications include incomplete CS, elderly/frail patients, and diverticular disease assessment.

Conclusions:

  • CTC is a valuable tool when CS is incomplete, unfeasible, or refused.
  • Its use in symptomatic patients, screening, and surveillance requires further consideration, particularly when CS is not an option.