Hello and welcome
The bump is a matter of concern if it is painful, increasing in size and causing discomfort in day to day life. The causes of the bump near elbow are brusitis (inflammation of the brusae), Cyst
, Abnormal growth of the tissue, Injury
Consult your doctor and yourself clinically examined. Certain investigations like FNAC may help you to get to a diagnosis. Follow the instruction of your doctor and get yourself treated.