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18Fluoro-deoxy-glucose positron emission tomography in assessing tumor response to preoperative chemoradiation therapy for locally advanced rectal cancer.

 Hyuk Hur  ;  Nam Kyu Kim  ;  Mijin Yun  ;  Byung Soh Min  ;  Kang Young Lee  ;  Ki Chang Keum  ;  Jung Bai Ahn  ;  Hoguen Kim 
 JOURNAL OF SURGICAL ONCOLOGY, Vol.103(1) : 17-24, 2011 
Journal Title
Issue Date
Adenocarcinoma*/diagnostic imaging ; Adenocarcinoma*/drug therapy ; Adenocarcinoma*/pathology ; Adenocarcinoma*/radiotherapy ; Adult ; Aged ; Antineoplastic Agents/administration & dosage ; Camptothecin/administration & dosage ; Camptothecin/analogs & derivatives ; Colectomy ; Combined Modality Therapy/methods ; Female ; Fluorodeoxyglucose F18* ; Humans ; Male ; Middle Aged ; Neoplasm Staging ; Positron-Emission Tomography/methods* ; Preoperative Period ; Prospective Studies ; ROC Curve ; Radiopharmaceuticals* ; Rectal Neoplasms*/diagnostic imaging ; Rectal Neoplasms*/drug therapy ; Rectal Neoplasms*/pathology ; Rectal Neoplasms*/radiotherapy ; Treatment Outcome
rectal cancer ; preoperative chemoradiation therapy ; 18F-FDG PET ; treatment response assessment ; pathologic complete response
BACKGROUND: This study aims to evaluate the efficacy of (18)F-FDG PET in assessing tumor response after preoperative chemoradiation therapy (CRT) for rectal cancer. METHODS: Maximum standardized uptake value (SUV) was measured for 37 patients who underwent (18)F-FDG PET before and 4 weeks after completion of preoperative CRT. Pre-SUV, post-SUV, the difference between pre- and post-SUV (ΔSUV), and reduction rate (RR) were correlated with tumor response. RESULTS: A lower mean post-SUV and a higher mean RR were shown in good tumor response (T-downstaging(+) and tumor regression grade 1, 2). Considering pathologic complete response (pCR), the mean post-SUV and the mean RR were significantly different between pCR (+) patients (N = 13) and pCR (-) patients (N = 24) (2.7 vs. 4.8, P < 0.001, 73.9% vs. 58.7%, P = 0.009). With a 3.35 cut-off value for the post-SUV by receiver operating characteristic analysis, 84.6% sensitivity, 79.2% specificity, and 81.2% overall accuracy were obtained for discriminating between pCR (+) and pCR (-) (area under the curve = 0.885, P < 0.001). CONCLUSIONS: (18)F-FDG PET is potentially useful as a method for assessing tumor response after preoperative CRT for rectal cancer. Post-SUV and RR were significantly associated with pathological treatment response, especially in pCR.
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1. College of Medicine (의과대학) > Dept. of Pathology (병리학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiation Oncology (방사선종양학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Nuclear Medicine (핵의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Surgery (외과학교실) > 1. Journal Papers
Yonsei Authors
Keum, Ki Chang(금기창) ORCID logo https://orcid.org/0000-0003-4123-7998
Kim, Nam Kyu(김남규) ORCID logo https://orcid.org/0000-0003-0639-5632
Kim, Ho Keun(김호근)
Min, Byung Soh(민병소) ORCID logo https://orcid.org/0000-0003-0180-8565
Ahn, Joong Bae(안중배) ORCID logo https://orcid.org/0000-0001-6787-1503
Yun, Mi Jin(윤미진) ORCID logo https://orcid.org/0000-0002-1712-163X
Lee, Kang Young(이강영)
Hur, Hyuk(허혁) ORCID logo https://orcid.org/0000-0002-9864-7229
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