<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have a lump in my arm pit the size of a golf ball, maybe a lil smaller. also a lump the size of a grape on my lower inner bicep, both on my right arm. They both appeared 2 weeks ago and they are slightly painfull and have reduced in hardness and size since then. The day before I saw these, I did a lot of physical labor, with lots of heavy pulling and lifting. Is this a lymphnode case or muscular? I also take 1000 mgs. of L-Tyrosine a day with 2000 mgs. of Vitamin C and B 6. could is also be a reaction to amino acids? Please help. ... -Geoff  <response>: Welcome to Chat Doctor .1. The history of bilateral axillary lumps over two weeks - suggest me as lymph nodal enlargement.2. This type of lymph nodal enlargement is seen in case of localized and systemic infection inflammation may cause the similar symptoms.3. Possbility of muscular pain is possible, lumpy less is not seen after labor work.4. In this case I would recommend you to at an ultrasound examination of bilateral axillary region - to find out the nature of the lesions lumps, its source and extensions.5. After that first the underlying cause should be treated, if required an FNAC - fine needle aspiration cytology might be necessary to evaluate the types of cells. Hope it helps you. Wish you a good health. Anything to ask ? Do not hesitate. Thank you. 