Pulmonary Langerhans Cell Histiocytosis and Diabetes Insipidus in a Young Smoker

Figure 1

(a) Axial CT scan of the chest with lung window settings at the level of the upper trachea demonstrates multiple bilateral thin-walled cysts and a few ill-defined centrilobular nodules (white arrows). Note a small left pneumothorax (thin black arrow). (b) Axial CT scan of the chest with lung window settings demonstrates bilateral thin-walled cysts, some with bizarre shapes such as in the left lower lobe. Note a small residual right-sided pneumothorax (arrow). (c) Coronal CT reformats with lung window settings demonstrate bilateral lung cysts, some with bizarre shapes (arrow) involving mainly the mid and upper lung zones with relative sparing of the costophrenic angles.

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