A member asked:

What is this lump on my left side collarbone?

A doctor has provided 1 answer
Dr. Ryan Grabow answered

Specializes in Orthopedic Surgery

Need More info.: I am going to assume you mean the lump/bump at the outer edge of the collarbone (clavicle). This is a joint called the ac joint or acromioclavicular joint. If you have pain with this lump or it is a new lump or slowly increasing in size you need to see an orthopedic surgeon and get xrays. Good luck.

Answered 10/7/2013

4.9k views

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