MeSH definition : Presence of pus in a hollow organ or body cavity.;
MeSH annotation : GEN or unspecified; prefer specifics but empyema unspecified by author may be EMPYEMA,
PLEURAL: check text; coord IM with precoord organ/dis term (IM); empyema in tuberc
EMPYEMA, TUBERCULOUS; general or unspecified; prefer specifics but empyema unspecified may be EMPYEMA, PLEURAL:
check text; coordinate with precoordinated organ/disease term;
Wikipedia link : https://en.wikipedia.org/wiki/Empyema;