Cancer Etiopathogenesis — Definitive Version 2026 — Silent Chronic Inflammation, Organ Gradient and Biological Proof from the Naked Mole Rat.

Silent chronic inflammation is the necessary and sufficient condition for the development of cancer. This document unifies Cause 1 (biological pathogens: viruses 85-90%, H. pylori, oncogenic parasites) and Cause 2 (non-organic IARC Group 1 carcinogens 10-15%) under a single etiopathogenetic framework. The final pathway is identical for all agents: penetration → biofilm → silent chronic inflammation → cumulative genomic damage during cell repair → cancer. The organ gradient (permeability + sensitivity) explains why the pancreas has the highest cancer incidence while the heart has zero. The appendix on the naked mole rat (Tian et al., Nature 2013; Zhang et al., Nature 2023) provides direct experimental biological proof: removing the HMM-HA barrier causes cancer to appear even with active oncogenes; maintaining it produces zero cancer. Acute inflammation — which generates immediate alarm signals — never leads to cancer. Silent chronic inflammation — which produces no symptoms for decades — always does. The data belong to peer-reviewed international literature. Someone simply lined them up for the first time.