Delayed follow-up after positive colorectal cancer screening represents a critical gap where potentially life-saving interventions lose momentum. Each week of delay between a positive fecal test and diagnostic colonoscopy incrementally increases cancer progression risk, making care coordination a literal matter of life and death for vulnerable populations.
This randomized trial involving 89 patients with positive fecal immunochemical tests at federally qualified health centers demonstrated that centralized telephone-based patient navigation significantly reduced time to follow-up colonoscopy compared to standard care. The intervention provided comprehensive support including procedure scheduling assistance, bowel preparation guidance, and social needs coordination. Among participants, 54% were female, 33% identified as Black, and 60% had no prior colorectal cancer screening history.
The findings address a well-documented healthcare delivery failure where positive screening tests languish without timely follow-up, particularly affecting underserved populations. Previous research has established clear associations between delayed colonoscopy and increased cancer incidence, advanced-stage diagnosis, and mortality. However, this study's relatively small sample size of 89 positive cases limits generalizability, and the single-state setting may not reflect national diversity in healthcare infrastructure. The telephone-based navigation model offers promise for scalable implementation, though cost-effectiveness analysis remains crucial. This represents incremental but meaningful progress in closing care gaps, building on established patient navigation principles while targeting a specific high-risk transition point in the cancer screening continuum.