Compare two xml messages but ignore some nodes

I have two XML messages like so:

xml1:

<root>
  <elementA>something</elementA>
  <elementB>something else</elementB>
  <elementC>yet another thing</elementC>
</root>

xml2:

<root>
  <elementA>something different</elementA>
  <elementB>something else</elementB>
  <elementC>yet another thing</elementC>
</root>

I want to compare two xml contents, but I don't care about elementA. I'm using the XML Diff that comes from Microsoft. Is there any way to do like that?