What can cause a lump in the arm and how is it treated or removed?
There are many causes for formation of arm lump in an individual. Some of the causes of lumps in the arm are direct trauma, infection, inflammatory disease like rheumatoid arthritis, cysts and tumors, as well as cancers. 1 Lump In The Arm Caused By Trauma: if an individual gets hit by a ball on the arm, falls on the ground on the arm, or injures the arm during some activities may result in ...