Abstract:
BACKGROUND:We compared the outcome of patients who received non-image-guided intensity-modulated radiotherapy (IMRT) with those who received helical tomotherapy (HT), a daily image-guided radiotherapy (IGRT), after surgery for oral cavity cancer (OCC). METHODS:During the period November 2006 to December 2013, a total of 152 postoperative OCC patients underwent either IMRT (n = 79) or daily IGRT (n = 73) 4 to 6 weeks after surgery. Patients in the IMRT group received 6 MV photon beams to 7 fields and those in the IGRT group received daily fractions of 1.8 or 2 Gy on five consecutive days. RESULTS:Patients who received daily IGRT had higher 5-year overall survival than those who received IMRT (87% versus 48%, p = 0.015). The local progression-free survival rate was also higher in patients who received IGRT (85% versus 58%, p = 0.006). More patients in the IGRT group completed the package of overall treatment time in ≤ 13 weeks and completed their course of radiation therapy in ≤ 8 weeks than patients in the IMRT group (89% versus 68%, p = 0.002; 84% versus 58%, p = 0.001), respectively. The rate of local failure in the primary tumor area was 24.0 % in the IMRT group and 6.8% in the IGRT group. Among patients with primary local failure, the marginal failure rate was 52.6% in the IMRT group and 0 % in the IGRT group. CONCLUSIONS:For patients with locally advanced OCC, postoperative IGRT results in better overall survival, better local progression-free survival, less marginal failure and shorter overall treatment time than postoperative non-image-guided IMRT.
journal_name
BMC Cancerjournal_title
BMC cancerauthors
Hsieh CH,Shueng PW,Wang LY,Huang YC,Liao LJ,Lo WC,Lin YC,Wu LJ,Tien HJdoi
10.1186/s12885-016-2165-9subject
Has Abstractpub_date
2016-02-23 00:00:00pages
139issn
1471-2407pii
10.1186/s12885-016-2165-9journal_volume
16pub_type
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