Lymphocytic interstitial pneumonitis
Severe dyspnea and cough.
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Bilateral pulmonary diffuse (with lower lobe predominance) ground glass attenuation, thickened bronchovascular bundles and interstitial thickening, ill-defined pulmonary nodules and multiple scattered thin walled air cysts.
Multiple mildly enlarged mediastinal lymph nodes.
Multiple right rib fractures.
The differential diagnosis includes diseases with lung cysts such as:
- occur in younger females
- cysts are generally uniformly distributed throughout the lungs
Langerhans cell histiocytosis (LCH)
- males usually smokers
- bizarre cysts that spare the costophrenic angles
- small ill-defined stellate nodules in centrilobular location
- upper lung zone predominant