Prague C&M Criteria (Barrett Esophagus)
Prague C&M criteria (Sharma 2006) for the endoscopic grading of Barrett esophagus — the standardized measure of the circumferential (C) and maximal (M) extent, in cm above the gastroesophageal junction,…
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Circumferential extent C
- 2
- Maximal extent M
- 5
Result: Prague C2 M5: a Barrett segment 2 cm circumferential and 5 cm maximal extent; long-segment (M >= 3 cm).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- C
- Circumferential extent of the Barrett segment (cm above the GEJ).
- M
- Maximal extent, including the longest tongue (cm above the GEJ); M is at least as long as C.
- Segment
- Traditional descriptor: short-segment M < 3 cm, long-segment M >= 3 cm (secondary to the Prague measure).
What you enter
- Circumferential extent C (cm above GEJ)
- Maximal extent M (cm above GEJ)
How this is calculated
Sharma P, Dent J, Armstrong D, et al. The development and validation of an endoscopic grading system for Barrett esophagus: the Prague C & M criteria. Gastroenterology. 2006;131(5):1392-1399. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.