For the last few months, I have had mild discomfort on my right side, below my armpit. The area sometimes is tender and there may be a small thickening of tissue. What might be the cause of this? I am a 70 year old female. I am scheduled for my yearly mammogram next week.
Hello, Possibly, it is a soft tissue lesion as sebaceous cyst, lipoma, or lymph node. A clinical examination with a consultant surgeon would be diagnostic. Hope I have answered your query. Let me know if I can assist you further.