<s>[INST] Three weeks ago  I noticed a small lump in the center of my front rib cage, under my breasts. My doctor thinks it is not cancerous, but cannot remember what she suspects it is. I have lost about 38 pounds in the past 6 months and doctor thinks I may have injured the rib cage in the past and just noticing this due to weight,  I am now 197 pounds, 5'2" - down from 248 about a year ago.  I have been overweight most of the past 22 years.  I had a roll-over car accident 15 years ago, nothing since. [/INST] Respected user , HiThanks for using Healthcaremagic.comI have evaluated your query thoroughly .*  If  by clinical  and other supportive parameters , your breast lump is     mostly   non cancerous it is fine , then  systemic evaluation has to be     carried  out  for  the  weight  loss .Thanks  .Regards . </s>