question: Hi my sister, 25 years old had medical check up and they found fibroinfiltrate on both upper lung and middle left lung from the xray. My sister currently worked at country with high tb for one year. But she didn t have any symptomps when comeback. She went to doctor, check lab and her sputum, the results was high esr, sputum neg, the others normal. The doctor then diagnosed her as tb. I suggest her to do another xray and the result is clear left lung and suspicious infiltrate on upper right lung. She ask me is this really tb but I don t know. Can you help me?