Respected user , Hi
Thanks for using Healthcaremagic.com
I have evaluated your query thoroughly .
*  There seems additional component of  pathology apart from 
duodenitis .
    which may be 
intercostal muscle ligament sprain or strain .
*  Needs MRI  for  the  diagnosis perfectly .
*  Suggestions  to  get  better  recovery 
-  Local 
analgesic ointment or spray application 3 times a day .
-  Tab. 
tylenol (500)mg 3 times a day after meals .
-  Dietary modifications  with  avoidance of oily , spicy , non veg stuffs .
-  No 
smoking , alcohol .
-  Regular walking in fresh air , exercise , YOGA will support a lot .
Hope this clears your query .
Welcome for any future assistance .
Regards dear .