Prediction of prognosis using standardized uptake value of 2-[(18)F] fluoro-2-deoxy-d-glucose positron emission tomography for nasopharyngeal carcinomas.
OBJECTIVE
To evaluate the prognostic significance of 2-[F-18]fluoro-2-deoxy-D-glucose positron emission tomography ([(18)F]FDG-PET) at diagnosis by calculating maximal standard uptake values (SUV(max)) in patients with non-disseminated nasopharyngeal carcinoma (NPC) receiving concurrent chemo-radiotherapy (CCRT).


METHODS
[(18)F]FDG-PET was performed in 41 patients with non-disseminated NPC scheduled to undergo platinum-based CCRT. [(18)F]FDG uptake by primary tumors and neck nodes was measured with the SUV(max).


RESULTS
Complete response occurred in all 41 patients. The ten patients who presented with any component of treatment failure had a significantly higher SUV(max) than the remaining patients. The median SUV(max) of all patients was 6.48 (range: 2.31-26.07). Patients having tumors with high [(18)F]FDG uptake (median or greater) had a significantly lower 3-year disease free survival (DFS) rate than patients with lower tumor [(18)F]FDG uptake (less than median) (51% vs 91%, P=0.0070). Patients with an SUV(max) below 8 had a higher DFS than patients with an SUV(max) of 8 or greater.


CONCLUSIONS
[(18)F]FDG uptake, as measured by the SUV(max), may predict DFS in CCRT-treated NPC. High [(18)F]FDG uptake may be useful for identifying patients requiring more aggressive treatment.
Lee
Sang-wook
SW
Department of Radiation Oncology, University of Ulsan, Seoul, Republic of Korea. lsw@amc.seoul.kr
Nam
Soon Yuhl
SY
Im
Ki Chun
KC
Kim
Jae Seung
JS
Choi
Eun Kyung
EK
Ahn
Seung Do
SD
Park
Sung Ho
SH
Kim
Sang Yoon
SY
Lee
Bong-Jae
BJ
Kim
Jong Hoon
JH
D000293:Adolescent; D000328:Adult; D000368:Aged; D003131:Combined Modality Therapy; D019583:Dose Fractionation, Radiation; D005260:Female; D019788:Fluorodeoxyglucose F18 / Q000493:pharmacokinetics; D006801:Humans; D008297:Male; D008875:Middle Aged; D009303:Nasopharyngeal Neoplasms / Q000000981:diagnostic imaging* / Q000188:drug therapy / Q000532:radiotherapy; D049268:Positron-Emission Tomography / Q000379:methods*; D011379:Prognosis; D016016:Proportional Hazards Models; D019275:Radiopharmaceuticals / Q000493:pharmacokinetics; D011879:Radiotherapy Dosage; D012189:Retrospective Studies; D015996:Survival Rate; D016896:Treatment Outcome
D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18