Full Text of Search Strategy and Results as of December 16, 2014
| No. | Search query | PubMed | Embase | Cochrane |
| 1 | pet OR pet-ct OR FDG OR “2 fluoro 2 deoxy” OR FDG OR positron-emission tomography OR “18fdg” | 73,205 | 94,057 | 3,121 |
| 2 | esophageal OR esophagus OR esophageal OR esophagus OR gastro- esophageal OR gastro-esophageal OR gastroesophageal OR oesophagogastric OR esophagogastric | 128,173 | 127,316 | 8,707 |
| 3 | cancer OR cancers OR tumor OR tumor OR tumors OR tumors OR neoplasm OR neoplasms OR malignancy OR malignancies OR adenocarcinoma OR adenocarcinomas OR carcinoma OR carcinomas | 2,206,283 | 2,270,954 | 90,252 |
| 4 | #1 AND #2 AND #3 | 948 | 1,684 | 60 |