Relapse is always a problem in the treatment of cancer. Lai Chi-ming explains that by the time cancer is diagnosed, cancer cells have often spread through the body, and the disease may recur several years later else-where in the body, no matter how effective the original surgery was.
傳統癌症治療上，再發一直是個難解的習題，賴基鳴指出，許多癌症在發現時，癌細胞其實已經經由血液擴散到身體其他部位，因此，即使切除手術做得再完善，幾年後，還是可能在其他部位再發。