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?
Thanks for your question on Chat Doctor. In my opinion it is PTB (Pulmonary Tuberculosis). Since TB is airborne infectious disease anyone can get the infection from TB patient.  And 1 year stay in TB endemic area is sufficient to get infection. Tb bacilli have high affinity for upper and middle lobes as oxygen tension is high in those area and TB Bacilli need oxygen for growth. So any upper and middle lobe lung lesion should first be investigated for TB. The tests done for this are1. Sputum for AFB2. Bronchoscopy and BAD(Bronchi Alveolar Lavage) analysis for TB3. CT Thorax if your sisters sputum report is negative you can still diagnose TB by doing Bronchoscopy with BAD analysis and CT THORAX.