so 6 months ago I went to bed and felt something weird happening in the left side my neck. 24 hours later it had swelled to the size of like 3 fingers. I had already been to the clinic for a infected finger the day before and was given antibiotics.I also had a bad cough. I returned after the swelling started. I was told it was a swollen lymph node. of course. Two months later it was still swollen but decreased by maybe 25%. I went to another clinic. I wasn t given anymore antibiotic but I had a FNA performed. A thick tan pus came out but they were not able to find any cells for a biopsy. But still they got quite a lot of fluid out and was now the size of maybe 1cm. A month later had a ct scan and the results said unspecific slightly thick walled cystic mass filled with fluid. went to another doctor gave me more antibiotics.im 7 days into a 14 day course of amoxcillan. Im not sure if its smaller but it does feel more movable than before. its been 6 months since the swelling appeared. it feels squishy,rubbery and smooth. I m not looking for a diagnosis here im just curious about the possibilities. is it unusual for a lymph node not to react to antibiotics and if so why?