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painful lump in side of breast / under armpit

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I'm 16, and last night noticed a quite large (size of a 20p at least) painful lump in the side of my breast/ under my armpit. It's becoming increasingly painful especially to touch and now, just as I'm sitting normally. The pain feels like a deep bruising under the skin, with NO redness or anything on the skin surface yet I can slightly see the shape change from the lump. Please tell me whether this is something normal, or the likely hood of it being something serious such as cancer?
I know I should probably go to the doctors but it's incredibly embarrassing. :s
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First Helper User Profile Dr. Robert Wascher

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replied January 2nd, 2011
Breast cancer in adolescents is enormously rare. Lymphoma must always be considered with enlargement of the lymph nodes, although in the vast majority of such cases, lymph nodes that are enlarged due to lymphoma are not significantly painful.

While this painful lump is not highly likely to be related to cancer, as I cannot examine you, it is best to have your doctor take a look, just to be on the safe side.


Robert A. Wascher, MD, FACS

Author, "A Cancer Prevention Guide for the Human Race"

A landmark, evidence-based guide to a healthy cancer-prevention lifestyle, based on cutting-edge cancer research.
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