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@ARTICLE{Hfner:126647,
author = {M. F. Häfner and F. Roeder$^*$ and F. Sterzing$^*$ and D.
Krug and S. A. Koerber and J. Kappes and H. Hoffmann and A.
Slynko$^*$ and J. Debus$^*$ and M. Bischof},
title = {{P}ostoperative radiotherapy of patients with thymic
epithelial tumors ({TET}): a retrospective analysis of
outcome and toxicity.},
journal = {Strahlentherapie und Onkologie},
volume = {191},
number = {2},
issn = {0179-7158},
address = {Heidelberg},
publisher = {Springer51814},
reportid = {DKFZ-2017-02675},
pages = {133-140},
year = {2015},
abstract = {The purpose of this study was to evaluate postoperative
radiotherapy regarding outcome and toxicity in patients with
thymic epithelial tumors (TET) after surgery.We
retrospectively analyzed medical records of 41 patients with
TET treated with postoperative radiotherapy at our
institution between 1995 and 2012. The impact of prognostic
factors (e.g., Masaoka stage, histological subtype) was
investigated and radiation-related toxicity was
assessed.Median age was 59.8 years and median follow-up was
61 months. In $24.4 \%,$ TETs were associated with
paraneoplastic syndromes. The 5-year overall survival (OS)
was $89.5 \%$ and the 5-year disease-free survival (DFS)
was $88.9 \%.$ Masaoka stage had a significant impact on
OS (p = 0.007). Locally limited stages I + II had a
5-year OS of $100 \%$ compared to $80 \%$ for stage III
and $66.7 \%$ for stage IV. The 5-year DFS was excellent
with $100 \%$ for both WHO groups A/AB/B1 and B2,
respectively, and significantly (p = 0.005) differed
from B3/C-staged patients with a 5-year DFS of $63.6 \%.$
Resection status, paraneoplastic association, radiation
dose, or tumor size did not influence survival. There were
no high-grade acute or late side effects caused by
radiotherapy.Masaoka stage has a significant impact on OS as
WHO type has on DFS in patients with TETs after surgery and
adjuvant irradiation. Postoperative radiotherapy with doses
around 50 Gy is safe and not likely to cause high-grade
toxicity. Further prospective trials are necessary to
separate patient subgroups that benefit from radiotherapy
from those that do not.},
cin = {E055 / E050 / C060},
ddc = {610},
cid = {I:(DE-He78)E055-20160331 / I:(DE-He78)E050-20160331 /
I:(DE-He78)C060-20160331},
pnm = {315 - Imaging and radiooncology (POF3-315)},
pid = {G:(DE-HGF)POF3-315},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:25156510},
doi = {10.1007/s00066-014-0740-z},
url = {https://inrepo02.dkfz.de/record/126647},
}