This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Atypical X-ray findings in Chest X-ray in tuberculosis is usually seen in which of the following? 
Select and explain. 
A. HIV, B. MDR TB, C. Adults with TB, D. Culture positive TB
A: HIV
Answer: A: HIV 
Explanation: Immunosuppressed patients, including HIV infection, have "atypical" findings on chest radiography e.g., lower-zone infiltrates without cavity formation. Ref: Harrisons Principles of Internal Medicine, 18th Edition, Page 1350.