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Clinical outcomes of IMRT planned with or without PET/CT simulation for patients with pharyngeal cancers.
- Source :
-
International Journal of Clinical Oncology . Feb2017, Vol. 22 Issue 1, p52-58. 7p. - Publication Year :
- 2017
-
Abstract
- Background: Clinical results of computed tomography (CT) simulations and [F]-fluoro-2-deoxyglucose (FDG) positron emission tomography (PET)/CT simulations were compared retrospectively. Materials and methods: Between 2006 and 2011, [F]-FDG PET/CT simulation was performed on 68 consecutive patients with pharyngeal cancers (PET/CT group). As an historical control, conventional CT simulation was performed on 56 consecutive patients with pharyngeal cancer between 2000 and 2006 (CT group). In the PET/CT group, the primary sites were nasopharynx (NPC), oropharynx (OPC), and hypopharynx (HPC) in 35, 20, and 13 patients, respectively; in the CT group, the primary sites were NPC, OPC, and HPC in 21, 17, and 18 patients, respectively. All but five patients in the PET/CT group were treated with intensity modulated radiation therapy (IMRT). Results: In the PET/CT group, TNM and clinical stages changed in 11 (16 %) and eight (12 %) patients, respectively. Although the 5-year overall survival (OS) rates for the PET/CT and the CT groups were 80 and 64 %, respectively ( p = 0.0420), this result may be attributable to the background difference between the two groups. Similarly, the 5-year locoregional control rates of the two groups were 82 and 70 %, respectively ( p = 0.0501). Notably, marginal recurrences around the planning target volume (PTV) were only noted in four CT group patients. Conclusion: PET/CT simulation was useful for delineating an accurate clinical target volume (CTV) of pharyngeal cancer, and its clinical results were satisfactory. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13419625
- Volume :
- 22
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- International Journal of Clinical Oncology
- Publication Type :
- Academic Journal
- Accession number :
- 121148887
- Full Text :
- https://doi.org/10.1007/s10147-016-1034-5