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Dr. Andrew Rynne
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What causes lump under the armpit during puberty stage?

My 12 year old son is in puberty. He has quite a bit of pubic hair, under arm hair, acne and one nipple has enlarged and a lump behind it. His penis had enlarged quite a bit and testicles. However, over the past 6 weeks or so he has noticed about 1/2" in diameter hard lump under his left under arm. In the beginning it hurt, but said it doesn't now. The size has not gone down. I also feel another lump in the other underarm as well. Not as big though. Is this something we should be concerned about?
Tue, 24 Sep 2019
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General & Family Physician 's  Response

It could be a lymph node. It indicates an infection in the nearby region. If lump persists you can consult a general surgeon and plan for an ultrasound scan.

Hope I have answered your query. Let me know if I can assist you further.

Take care

Dr Shinas Hussain, General & Family Physician
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