@article{oai:ompu.repo.nii.ac.jp:00000319,
 author = {MATSUTANI, Hiroki and NAKAI, Go and KANEKO, Tomohiro and LEE, Sang-Woong and YAMAMOTO, Kazuhiro and OSUGA, Keigo},
 issue = {1-2},
 journal = {Bulletin of Osaka Medical and Pharmaceutical University},
 month = {Dec},
 note = {Background: The aim of this study was to clarify the necessity of routine chest CT in the follow-up of postoperative gastric cancer (GC) and the optimal CT interval based on risk determined by pathological stage (PS; pT and pN) to minimize radiation exposure to patients.
Method: The subjects were 361 postoperative patients with primary GC. We retrospectively evaluated sites of recurrence, time to recurrence revealed on chest and abdominopelvic CT, and PS.
Results: Forty-two patients experienced recurrences. The pN factor was more strongly associated with thoracic metastasis than pT factor in patients with N0-1 (n = 278) versus those with N2-3 (n = 83) (p < 0.05) and in those with T1-2 versus those with T3-4 (p = 0.48). None of the 278 patients with pN0-1 had chest metastasis. Among the 83 atients with pN2-3, only abdominal lymph node recurrence was significantly associated with thoracic metastasis. Recurrences were detected within two years after resection in 38 patients (90 %) regardless of PS.
Conclusion: Abdominal lymph node recurrence as well as pN factor were significantly associated with thoracic metastases and actually none of patients with pN0-1 had chest metastases. These facts implied limited role of routine chest CT for those patients.},
 pages = {9--15},
 title = {Is Routine Chest and Abdominopelvic CT Necessary  for all Postoperative Gastric Cancer Patients?},
 volume = {68},
 year = {2022}
}