Hi,Dear,Thanks for your query to HCM.
Studied your query in full depth of its details.Reviewed it in context of your health concerns.
Based On the facts,You seem to suffer from-
Lipoma on the Back with Dercum's Disease Type-A painful version of the Benign Lipoma.
or/ it could be a -Sebaceous
Cyst with
Hematoma and infection-due to excessive handling lately.
or / could be due to Chronic burnt out-Boil with
Abscess, increasing lately
USG of the lump and FNAC
Biopsy if need be, after Surgeon's Second Review Opinion, would fix the cause of this Lump on your upper back.
Hope this reply would satisfy you and would help you to plan further treatment with your doctor there.
Welcome any further query in this regard,which would be replied in next
session.
Good Day!!
Dr.Savaskar M.N.
Senior Surgical Specialist
M.S.Genl-CVTS