Have Pain Under Armpit. Feeling Lumps. What To Do?
You feel a dint (do you mean swelling)
Detailed Answer:
AS you mentioned you had cysts that were drained 20 years ago and now you feel a dint (does it mean ?swelling in armpit). Correct me in the follow up if I am wrong.
If there is tiny swelling in armpit that may mean you have a swollen lymph gland that often happens due to some infection or inflammation some where; though at your age a thorough breast examination by family physician is also mandatory to exclude other causes (which can produce some swollen node).
If nothing turns out than you need to get examined by a physician and if he or she feels some tests may be ordered (eg a FNAC) to decide if this lymph node is of real concern.
Let me know if you need clarifications.
With best wishes
Dr Chowhan