<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE article  PUBLIC "-//NLM//DTD Journal Publishing DTD v3.0 20080202//EN" "http://dtd.nlm.nih.gov/publishing/3.0/journalpublishing3.dtd"><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" dtd-version="3.0" xml:lang="en" article-type="research article"><front><journal-meta><journal-id journal-id-type="publisher-id">IJMPCERO</journal-id><journal-title-group><journal-title>International Journal of Medical Physics, Clinical Engineering and Radiation Oncology</journal-title></journal-title-group><issn pub-type="epub">2168-5436</issn><publisher><publisher-name>Scientific Research Publishing</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.4236/ijmpcero.2021.101002</article-id><article-id pub-id-type="publisher-id">IJMPCERO-107015</article-id><article-categories><subj-group subj-group-type="heading"><subject>Articles</subject></subj-group><subj-group subj-group-type="Discipline-v2"><subject>Medicine&amp;Healthcare</subject><subject> Physics&amp;Mathematics</subject></subj-group></article-categories><title-group><article-title>
 
 
  Comment on Clinical Trial NCT00950001 and NCCTG/N107C/CEC.3: Are We Treating Cancer or Water?
 
</article-title></title-group><contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Junfang</surname><given-names>Gao</given-names></name><xref ref-type="aff" rid="aff1"><sub>1</sub></xref></contrib></contrib-group><aff id="aff1"><label>1</label><addr-line>Northeast Louisiana Cancer Institute, Monroe, LA, USA</addr-line></aff><pub-date pub-type="epub"><day>29</day><month>01</month><year>2021</year></pub-date><volume>10</volume><issue>01</issue><fpage>12</fpage><lpage>15</lpage><history><date date-type="received"><day>11,</day>	<month>December</month>	<year>2020</year></date><date date-type="rev-recd"><day>31,</day>	<month>January</month>	<year>2021</year>	</date><date date-type="accepted"><day>3,</day>	<month>February</month>	<year>2021</year></date></history><permissions><copyright-statement>&#169; Copyright  2014 by authors and Scientific Research Publishing Inc. </copyright-statement><copyright-year>2014</copyright-year><license><license-p>This work is licensed under the Creative Commons Attribution International License (CC BY). http://creativecommons.org/licenses/by/4.0/</license-p></license></permissions><abstract><p>
 
 
  During the implementation of clinical trials NCT00950001 and NCCTG/N107C/CEC.3 on post-operative stereotactic radiosurgery into clinic, it brought us some thinking of fundamental concept in science that the local control rate and survival rate rely on the treatment of marginal region more than resection cavity. Marginal region might still contain residual cancer cell while the resection cavity contains only water fluid most time. Radiation treatment should focus more on the margin rather than the cavity, thus treating cancer rather than water.
 
</p></abstract><kwd-group><kwd>NCT00950001</kwd><kwd> NCCTG/N107C/CEC.3</kwd></kwd-group></article-meta></front><body><sec id="s1"><title>Conflicts of Interest</title><p>The author declares no conflicts of interest regarding the publication of this paper.</p></sec><sec id="s2"><title>Cite this paper</title><p>Gao, J.F. (2021) Comment on Clinical Trial NCT00950001 and NCCTG/N107C/CEC.3: Are We Treating Cancer or Water? International Journal of Medical Physics, Clinical Engineering and Radiation Oncology, 10, 12-15. https://doi.org/10.4236/ijmpcero.2021.101002</p></sec></body><back><ref-list><title>References</title><ref id="scirp.107015-ref1"><label>1</label><mixed-citation publication-type="other" xlink:type="simple">Mahajan, A., Ahmed, S., McAleer, M.F., et al. (2017) Post-Operative Stereotactic Radiosurgery versus Observation for Completely Resected Brain Metastases: A Single-Centre, Randomised, Controlled, Phase 3 Trial. The Lancet Oncology, 18, 1040-1048.  
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