<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have a lump around the front of my shoulder that is about the size of a golf ball, it is fairly soft when my arm is relaxed and a bit harder when I lift my arm. It does not hurt, however now and again I get an achy pain in my arm. I have had an exray and the doctor said it showed nothing, but clearly I have a lump? Should I be concerned?  <response>: Hi! Thanks for writing to Chat Doctor describing your problem of a lump on the front of the shoulder! After going through your description of this kind of common lump, if I were your family physician, I would like to consider following possibilities as per my experience of ultrasound and needle biopsies:1.normal fatmuscular fold2. Benign skinsuperficial tumor like lipoma, neurofibroma or dermatofibroma3. Benign cysts like sebaceous cysts, lymphatic cyst, bursa, ganglion or hemangioma4. Collection in the joint5. Enlarged lymph nodeTherefore, it is not a thing for worries but still you may confirm its nature by ultrasonography and possibly needle biopsy to relieve your tension. Regards, 