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직장암의 방사선치료에 대한 patterns of care study : 1998~1999년도 수술 후 방사선치료 환자들의 특성 및 치료내용에 대한 분석결과

Other Titles
 Postoperative Radiotherapy in the Rectal Cancers Patterns of Care Study for the Years of 1998~1999 
 김종훈  ;  오도훈  ;  강기문  ;  김우철  ;  김원동  ;  김정수  ;  김준상  ;  김진희  ;  길학재  ;  서창옥  ;  손승창  ;  안용창  ;  양대식  ;  오원용  ;  이경자  ;  전미선  ;  조홍래  ;  최두호  ;  최영민  ;  최일봉  ;  김일한  ;  안용찬 
 Journal of the Korean Society for Therapeutic Radiology and Oncology, Vol.23(1) : 22-31, 2005 
Journal Title
Journal of the Korean Society for Therapeutic Radiology and Oncology(대한방사선종양학회지)
Issue Date
Rectal cancer ; Patterns of Care Study ; Radiotherapy
Rectal cancer ; Patterns of Care Study ; Radiotherapy
Purpose: To conduct a nationwide survey on the principles in radiotherapy for rectal cancer, and produce a database of Korean Patterns of Care Study.

Materials and Methods: We developed web-based Patterns of Care Study system and a national survey was conducted using random sampling based on power allocation methods. Eligible patients were who had postoperative radiotherapy for rectal cancer without gross residual tumor after surgical resection and without previous history of other cancer and radiotherapy to pelvis. Data of patients were inputted to the web based PCS system by each investigators in 19 institutions.

Results: Informations on 309 patients with rectal cancer who received radiotherapy between 1998 and 1999 were collected. Male to female ratio was 59:41, and the most common location of tumor was lower rectum (46%). Preoperative CEA was checked in 79% of cases and its value was higher than 6 ng/ml in 32%. Pathologic stage were I in 1.6%, II in 32%, III in 63%, and IV in 1.6%. Low anterior resection was the most common type of surgery and complete resection was performed in 95% of cases. Distal resection margin was less than 2 cm in 30%, and number of lymph node dissected was less than 12 in 31%. Chemotherapy was performed in 91% and most common regimen was 5-FU and leucovorine (69%). The most common type of field arrangement used for the initial pelvic field was the four field box (Posterior-Right-Left) technique (65.0%), and there was no AP-PA parallel opposing field used. Patient position was prone in 81.2%, and the boost field was used in 61.8%. To displace bowel outward, pressure modulating devices or bladder filling was used in 40.1%. Radiation dose was prescribed to isocenter in 45.3% and to isodose line in 123 cases (39.8%). Percent delivered dose over 90% was achieved in 92.9%.

Conclusion: We could find the Patterns of Care for the radiotherapy in Korean rectal cancer patients was similar to that of US national survey. The type of surgery and the regimen of chemotherapy were variable according to institutions and the variations of radiation dose and field arrangement were within acceptable range.
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1. College of Medicine (의과대학) > Dept. of Radiation Oncology (방사선종양학교실) > 1. Journal Papers
Yonsei Authors
Suh, Chang Ok(서창옥)
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