1. 
   Retrosternal
   Retrosternal: Behind the sternum (the breastbone).
   Found op http://www.medterms.com/script/main/art.html?articlekey=5343
   
   
2. 
   retrosternal
   <anatomy> Situated or occurring behind the sternum. ... (18 Nov 1997) ...
   Found op http://www.mondofacto.com/facts/dictionary?retrosternal
   
   
3. 
   retrosternal
   (ret″ro-stur´nәl) behind the sternum.
   Found op http://www.encyclo.co.uk/local/21001
   
   
4. 
   retrosternal
   (retro- + sternum) situated or occurring behind the sternum.
   Found op http://users.ugent.be/~rvdstich/eugloss/DIC/dictio77.html
   
   
5. 
   retrosternal
   Type: Term Pronunciation: ret′rō-ster′năl Definitions: 1. Posterior to the sternum.
   Found op http://www.medilexicon.com/medicaldictionary.php?t=78078
   
   
6. 
   retrosternal
   1) Behind the sternum
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/retrosternal/1
   
   

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