Hi,Thanks for the query to HCM.
-I studied your query in depth and understood your concerns.
-Cause and Treatment-of the lump on the arm/pectoral/rib cage-is mostly due to
Multiple lipomatosis -as the one you had on the wrist-for years.
-Its benign tumour and harmless and not to be worried.
They are not
lymphnodes.
These lumps are due to the genetic familial inheritance.
Unless they grow fast-they are not to be worried.
This would help you to plan treatment with your doctor.
Don't worry and things will settle
Hope this would resolve your query.
Welcome further for any query in this regard.
Wishing you a fast recovery.
Don't forget to Write a good review ASAP.
Have a Good Day.