Thanks for posting your query.
A lump near the elbow which is painful or increasing in size with no history of trauma can be due to-
Cyst: This is because muscle tissues in the area of the joints can become inflamed through strains, sprains or repeatedly being injured.
2. Synovial Cyst: is again a fluid-filled sack
4. Swollen Lymph
Node: This can be due to infections like bacterial or viral.
or Epicondylitis: This is also a infectious tissue.
To get rid from this problem you may need a course of antibiotic and anti-inflammatory drugs. Usually these types of lumps get recovered by medications. But it is always advisable to consult your doctor and get clinically examined. Nothing can be commented without clinical examination of the lump. So feel free to consult your doctor.
I hope this answers your query.
In case you have additional questions or doubts, you can forward them to me, and I shall be glad to help you out.
Please accept my answer in case you do not have further queries.
Wishing you good health.
Dr. Praveen Tayal.