Lymphocytic interstitial pneumonitis

Case contributed by Dalia Ibrahim
Diagnosis probable


Severe dyspnea and cough.

Patient Data

Age: 30 years
Gender: Female

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.

Case Discussion

Lymphocytic interstitial pneumonitis (LIP) is uncommon and is seen mainly in patients with autoimmune disease and AIDS patients. This patient had a history of Sjogren syndrome

The differential diagnosis includes diseases with lung cysts such as:

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