Pulmonary Langerhans Cell Histiocytosis Presenting as a Solitary Pulmonary Nodule on a Lung Cancer Screening CT

<div>(a, b) Axial chest CT images show an irregular shape, 1.1 cm, left upper lobe nodule with spiculated margins (block arrow), and a thin-walled parenchymal cyst in right lower lobe (arrowhead). Please note mild centrilobular, paraseptal emphysema, and a tiny, calcified right upper lobe nodule (thin arrow).</div>

Case Reports in Pulmonology

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Figure 1

Figure 1: Pulmonary Langerhans Cell Histiocytosis Presenting as a Solitary Pulmonary Nodule on a Lung Cancer Screening CT 