This happens because typically tumors are areas where the immune system has no access, and so bacteria find these tumors and use them as a safe haven to grow and thrive.
Arsyeja eshte se tumoret jane zona ku sistemi imunitar  nuk mund te veproje, per kete bakteret i gjejne keto tumore dhe i perdorin si nje vend te sigurte per tu rritur dhe shumuar.