Abstract:
BACKGROUND:The superiority of volumetric staging (VS) over TNM/TNM-grouping system was previously prospectively tested in our head neck cancer population treated with intensity-modulated radiotherapy (IMRT); gross tumor volume (GTV) was the strongest predictor for disease control. Aim of this work was to specifically assess the prognostic value of VS in oropharyngeal cancer (OC). PATIENTS:Between 04/2002 and 12/2011, 277 consecutive OC patients underwent definitive IMRT. Mean/median follow-up was 33/27 months (3-113). Three volumetric cut-offs were used (resulting in 4 GTV subgroups: 1-15 cc (14%), 16-70 cc (62%), 71-130 cc (20%), >130 cc (4%)). METHODS:Outcome in the OC subgroup was prospectively assessed with VS and compared with that resulting from TNM and AJCC staging. RESULTS:Primary GTV was most reliably predicting local control (p<0.0001), all other outcome parameters were predicted best by the total GTV (p<0.0001). CONCLUSION:This is -to our knowledge- the first volumetric staging system for OC, and was found to be most reliable in predicting outcome in OC patients treated with IMRT.
journal_name
Oral Oncoljournal_title
Oral oncologyauthors
Studer G,Glanzmann Cdoi
10.1016/j.oraloncology.2012.09.014subject
Has Abstractpub_date
2013-03-01 00:00:00pages
269-76issue
3eissn
1368-8375issn
1879-0593pii
S1368-8375(12)00317-Xjournal_volume
49pub_type
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