<s>[INST] Hi, can I answer your health question? Please type your question here...I am 10 days post op left arthroscopic shoulder surgery. Apparently there was a large tear, bone spurs and impingement. I have found two very painful pea sized lumps in my armpit. What could they be? ... [/INST] Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. * The possible issue here mandates secondary lymph node enlargement or serous collection in axilla after the arthroscopic shoulder surgery. * I recommend to consult your ortho surgeon immediately without delay to handle the issue. Hope I have answered your query. Let me know if I can assist you further. </s>