CXR shows bilateral diffuse miliary shadows (<2 mm diameter) due to miliary tuberculosis. The differential diagnoses include previous varicella infection, disseminated histoplasmosis, and silicosis. A travel history to endemic countries or a relevant occupational history is helpful to distinguish the various causes. Another very rare cause of such a CXR pattern is pulmonary alveolar microlithiasis.
Case 32. This 25-year-old female had tiredness and shortness of breath for the past year. Describe the CXR (Fig. 32.1).
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