Description

Determines whether colorectal cancer screening is viable or appropriate for a patient, regardless of risk level.

This path can be used to ensure any clinical decision support tools do not provide recommendations when screening is not appropriate or clinically applicable.

Mid-Level Flow Diagram

Semi-Structured Logic Statements

Inclusions

None.

Exclusions

None.

Events

Name	Description
History of total colectomy
'Total colectomy' is TRUE
Current Colorectal Cancer?
'Current colorectal cancer' is TRUE
Colorectal Signs or Symptoms?
'Colorectal signs or symptoms' is TRUE

Actions

Eligible for screening Description Patient is eligible for colorectal screening. Pseudocode

Recommendation: Consider diagnostic work up or examination Description Consider referral for a diagnostic workup or examination if patient has clinically significant signs or symptoms of colorectal cancer. Recommend aggressive evaluation (usually colonoscopy) of adults of age <50 years with colorectal symptoms, specifically those with bleeding symptoms: hematochezia, iron deficiency anemia, and/or melena with a negative upper endoscopy. Source: USMSTF, 2017 Pseudocode

References

• USMSTF (2017): Rex, D. K., et al. (2017). Colorectal Cancer Screening: Recommendations for Physicians and Patients From the U.S. Multi-Society Task Force on Colorectal Cancer. Gastroenterology, 153(1), 307-323. https://doi.org/10.1053/j.gastro.2017.05.013