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Tumori. 2016 Aug 3;102(4):381-6. doi: 10.5301/tj.5000483. Epub 2016 Apr 7.

Excellent survival regardless of disease stage in patients with advanced nasopharyngeal cancer.

Author information

1
Division of Radiation Oncology, AOU IRCCS San Martino - IST National Cancer Research Institute and University, Genoa - Italy.
2
Division of Medical Oncology, AOU IRCCS San Martino - IST National Cancer Research Institute and University, Genoa - Italy.
3
Division of Medical Physics, AOU IRCCS San Martino - IST National Cancer Research Institute and University, Genoa - Italy.

Abstract

BACKGROUND:

We present our experience in assessing the feasibility and efficacy outcomes of intensified intensity-modulated radiation therapy (IMRT) with simultaneous integrated boost (SIB) delivered to patients with nasopharyngeal carcinoma (NPC).

METHODS:

Between March 2009 and December 2014, 35 patients affected by advanced NPC with a median age of 53 years (range 11-77) were treated with definitive radiotherapy. Radiotherapy was delivered by helical tomotherapy with the SIB technique. The prescribed doses were 66 Gy to macroscopic disease, 60 Gy to high-risk subclinical disease, and 54 Gy to low-risk disease in 30 fractions. The daily SIB dose was 2.2 Gy to macroscopic disease.

RESULTS:

At the end of treatment 33 (94%) patients had obtained complete clearance of disease and 2 patients had died (1 of persistent disease after 3 months and 1 of cancer-unrelated causes after 4 months). At a median follow-up of 40 months (range 5-69), locoregional control rates at 2 and 4 years were 92.9% and 88.2%, respectively, and the overall survival after 4 years was 93.9%. The most significant acute toxicities were grade 2 and 3 mucositis (43%). No grade 3 and 4 late toxicities were observed; grade 2 xerostomia after 6 months from the end of treatment was reported in 11 patients; xerostomia toxicity decreased to grade 1 in 6/11 patients within 12 months.

CONCLUSIONS:

These results show that intensified IMRT with SIB is an excellent strategy offering high local control rates for NPC patients with mild acute and late toxicity.

PMID:
27056334
DOI:
10.5301/tj.5000483
[Indexed for MEDLINE]

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