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Lump in armpit, build up in pec muscle tissue, lymph nodes issue. Done ultrasound. Suggest?

Hi I m a 39yr old woman and have developed a lump in my left armpit. My gp sent me to a breast clinic, doctor examined me and he also felt the lump and sent me for an ultrasound to which the radiographer stated that she couldn t see anything, doctor stated that it is probably more to do with build up of muscle tissue in the pec muscle. I don t understand that as my left arm is my weakest arm, and i have not endured any physical activity in the last few months to build up this muscle. I subsequently went back to the gp this morning as I am seeking a second opinion, the gp states that she feels its more to do with my lymph nodes as its tender to touch and can move around, she is now sending me to haematology, what else will she be looking for as this lump has only been present in he last 4 months?
Asked On : Mon, 25 Feb 2013
Answers:  1 Views:  73
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Internal Medicine Specialist 's  Response
Thanks for coming to HCM.
-Did you notice any change in size -- increase and/or decrease in size during last 4 months?
-Is the lump painful?
-Is it freely movable?

What was the day of your menstrual cycle when ultrasound was done? Lymph nodes are present in armpit and get swollen due to multiple reasons. But if the ultrasound couldn't find anything, it should not be a serious concern as it's with good reliability. One possibility is breast tissue extension to armpit, which can change in size/swelling during different parts of menstrual cycle due to hormonal changes. Small amount of breast tissue in armpit is normal.
Your doctor is doing blood work to rule out any possible infection which might make lymph node swelling.
Wish you good health!
Answered: Tue, 26 Feb 2013
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