Hi, thanks for sharing your health concerns with HCM! Going through your history and presentation I m a bit worried and truly speaking, If I were your treating Doctor for this case of axillary lump, I would come up with three possibilities, these include: 1. lymph nodes due to acute bacterial infection or some chronic disorder like tuberculosis, or chronic chest infection ! 2. The second possibility is of benign and simple conditions like lipoma or neurofibroma or dermatofibroma; there is nothing to worry about these! 3. The last possibility is of sebaceous cyst or some other cysts like lymphatic cysts or could be fibrocystic changes in the axillary tail of breast tissue! Nothing to worry about these also! I suggest you to go for an FNAC and ultrasound of the lumps for confirmation and to relieve your concerns! Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health.