It isnoteworthy that the concurrent cancers from esophagus and gastric cardia in same patient (CC) is not uncommon in this area, with an incidence of 0.4-2.5%.

• 特别值得指出的是，该地区同一个体发生食管/贲门双原发癌(简称双源癌Concurrent Cancers from Esophagus andGastric Cardia in Same Patient，CC)并非罕见，双源癌检出率可高达0.；4-2