Fig. 8
From: Pulmonary Langerhans cell histiocytosis: the many faces of presentation at initial CT scan
A 35-year-old man, smoker, with asymptomatic PLCH (chest radiograph performed for traumatic injury). Diagnosis based on typical lesion heterogeneity on CT imaging. a Two-millimetre collimated CT images at initial diagnosis shows bilateral centrilobular ground-glass nodules, thin-walled cysts and a single air-trapping zone. Upper and middle lung are predominantly affected. b Three-millimetre collimated CT after 5 months of smoking cessation shows almost complete resolution of the centrilobular nodularity while thin-walled cysts remain unchanged