Impact of early radiological response evaluation on radiotherapeutic outcomes in the patients with nasal cavity and paranasal sinus malignancies.

Abstract:

:We analyzed the correlation between primary tumor response within 6 months after radiation therapy (RT) including proton beam therapy (PBT) and progression free survival rate (PFS) in patients with nasal cavity and paranasal sinus malignancies to clarify the impact of early radiological evaluation of treatment response on prognosis. Sixty-five patients treated between January 1998 and December 2008, and whose follow-up duration was more than 2 years were included. The Response Evaluation Criteria in Solid Tumors (version 1.1) was used for the evaluation of treatment. Median age was 59 years (range 21-83 years). Olfactory neuroblastoma (n = 20, 30%) and squamous cell carcinoma (n = 15, 23%) were the major pathological tumor types. The median follow-up duration was 51.6 months. Radiological response evaluation within 6 months after treatment demonstrated that 15% of the patients achieved complete response (CR), and 3-year progression free survival rates of all patients was 49.2%. The 3-year PFS rates according to response for the treatment were 55.6% in the patients with CR and 46.4% in those with non-CR, respectively (P = 0.643). However, the 3-year PFS rates were 80.% in the patients with CR and 10.% in those with non-CR (P = 0.051) in the patients with squamous cell carcinoma (SCC) histology. Radiological response evaluation within 6 months did not have a significant impact on prognosis when analysis included all histology, although early radiological response within 6 months after RT had a borderline significant impact on treatment outcomes for the patients with nasal and paranasal SCC.

journal_name

J Radiat Res

authors

Hojo H,Zenda S,Akimoto T,Kohno R,Kawashima M,Arahira S,Nishio T,Tahara M,Hayashi R,Sasai K

doi

10.1093/jrr/rrs021

subject

Has Abstract

pub_date

2012-09-01 00:00:00

pages

704-9

issue

5

eissn

0449-3060

issn

1349-9157

pii

rrs021

journal_volume

53

pub_type

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