Correction: Tumor Deposit Count as Prognostic Indicator in Colorectal Cancer

Overview

This correction clarifies the tumor location distribution among tumor deposit (TD)-positive and TD-negative colorectal cancers. Both groups had more left-sided tumors, but right-sided tumors were relatively more frequent in TD-positive cases, a nuance previously misstated.

Background

Tumor deposits (TDs) are recognized as an independent prognostic factor in colorectal cancer. Accurate characterization of tumor location relative to TD status is important for understanding disease behavior and prognosis. The original study analyzed a population-based cohort to evaluate the prognostic value of TD count, including tumor location as a variable in regression analyses.

Data Highlights

The correction specifies that although both TD-positive and TD-negative tumors were more commonly located in the left colon, the proportion of right-sided tumors was higher among TD-positive cases compared to TD-negative cases. This contrasts with the original phrasing that suggested TD-positive tumors were more frequently right-sided.

Key Findings

• Both TD-positive and TD-negative colorectal tumors are predominantly left-sided.
• Right-sided tumors are relatively more frequent among TD-positive patients than TD-negative patients.
• The original publication contained unclear phrasing that misrepresented tumor location distribution.
• Tumor location was included as a variable in regression analyses, so the correction does not affect the study's overall results.
• The correction improves clarity and accuracy in reporting tumor location relative to TD status.

Clinical Implications

Clinicians should recognize that while left-sided tumors predominate in colorectal cancer, TD-positive tumors have a relatively higher proportion of right-sided location. This nuanced understanding supports accurate prognostic assessment and reinforces the importance of including tumor location in multivariable analyses when evaluating TD impact.

Conclusion

This correction refines the description of tumor location distribution in relation to tumor deposit status without altering the study's conclusions, ensuring precise communication of prognostic factors in colorectal cancer.

References

1. Lundström et al. 2025 -- Tumour deposit count is an independent prognostic factor in colorectal cancer—a population-based cohort study