<s>[INST] There is a reoccurring pus filled lump appearing on my neck. I have done all the reports and they are normal with mild pulmonary prominence and fatty lung grade one. still waiting for my tissue culture report for TB. So what might be the reason for reoccurence of the lump as I have been operated already twice last year. Also i have been given medications for TB last year for 6 months though it was not detected. [/INST] Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. * As per my surgical experience, the recurrent lump on the neck indicate atypical organisms responsible for the pathology . * In our clinic, we recommend tissue culture and pus sensitivity reports with biopsy of scrapping material to find the root problem and treat. Hope I have answered your query. Let me know if I can assist you further. </s>