Insurance Co-Payment Status and Advanced-Stage Presentation of Colorectal Cancer in a Universal Healthcare System: A Surgical Cohort Study From Japan.

Kitagawa, Yusuke; Miki, Hisanori; Yamamoto, Takumi; Watanabe, Jun; Fukunaga, Yosuke · World J Surg · 2026

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Abstract

Colorectal cancer (CRC) is one of the most common malignancies worldwide and remains a leading cause of cancer-related mortality, particularly in aging societies such as Japan. The stage at diagnosis is a major determinant of prognosis, with stage IV disease associated with poor outcomes despite advances in systemic therapy.