I'm really worried about this report I got. It says there's a swelling on the dorsum of my left hand, with lots of polymorphs and macrophages, along with some debris. The report mentions a negative result for acid-fast bacilli, and recommends a PCR test for M. tuberculosis and a culture and sensitivity test. I'm not sure what all of this means or what I should do next. Could you help me understand the situation and what the best steps are to take from here? I'm feeling pretty anxious about it.