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Langerhans cell histiocytosis is an uncommon disease characterised by multiple cysts in patients with nicotine abuse.
In
Langerhans cell histiocytosis ... is an uncommon disease ... smoking related diseases ... Radiology #CTChest #LangerhansCellHistiocytosis
On the left a chest film of a 19 year old patient with Langerhans cell histiocytosis.
The
Langerhans cell histiocytosis ... Langerhans cell histiocytosis ... many inhalational diseases ... #CTChest #LCH #LangerhansCellHistiocytosis ... #Histiocytosis
Cystic versus Reticular
It can be difficult to determine whether we are dealing with a reticular pattern
Langerhans cell histiocytosis ... called a cystic disease ... Interstitial #Langerhans #LangerhansCellHistiocytosis
On the left radiological pathological correlation of Langerhans cell histiocytosis in respectively nodular stage and early
Langerhans cell histiocytosis ... Microscopy #LCH #LangerhansCellHistiocytosis ... #Late #Histiocytosis
Cystic Lung Disease
Upper Lobe Predominant: 
Langerhans Cell Histiocytosis, Pneumocystis Jiroveci, Hypersensitivity Pneumonitis, Neurofibromatosis Type 1, Paracoccidioidomycosis,
Cystic Lung Disease ... Langerhans Cell Histiocytosis ... Chain Deposition Disease ... Pulmonary Metastatic Disease ... #Cystic #Lung #Disease
Interstitial Lung Diseases (ILD)
Exposure-Related ILD (a.k.a. extrinsic allergic alveolitis): 
 • Hypersensitivity pneumonitis, Farmer's lung, Bird
Interstitial Lung Diseases ... Connective Tissue Disease ... connective tissue disease ... Langerhans cell histiocytosis ... Interstitial #Lung #Diseases
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
Smoking related diseases ... Langerhans cell histiocytosis
Granulomatous Lung Disease - Differential Diagnosis Algorithm
OP: organising pneumonia; EGPA: eosinophilic granulomatosis with polyangiitis; NSG: necrotising
Granulomatous Lung Disease ... interstitial lung disease ... Langerhans cell histiocytosis ... granuloma #Lung #Disease
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
Langerhans cell histiocytosis ... Honeycombing Most diseases
On the left a case with multiple round and bizarre shaped cysts.
There was an upper lobe
Langerhans cell histiocytosis ... Radiology #CTChest #LangerhansCellHistiocytosis ... #Langerhans #Histiocytosis