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On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
diseases with a nodular ... #Clinical #Diagnosis ... #Radiology #Pulmonary ... NodularPattern #Differential ... #Comparison #Table
Size
A solitary pulmonary nodule (SPN) is defined as a single intraparenchymal lesion less than 3 cm
Size A solitary pulmonary ... diameter is called a mass ... can be either benign ... listed in the table ... #EBM #Radiology
Solitary Pulmonary Nodule
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A solitary pulmonary nodule or
pulmonary nodule ... The differential ... the same as of a mass ... most commonly benign ... #Diagnosis #Radiology
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Differential diagnosis ... Nodular LCH: - Sarcoidosis ... central dot. - LIP #Clinical ... #Diagnosis #Radiology ... #Comparison #Table
Differential diagnosis of Lymphangitic Carcinomatosis. 
On the left multiple diseases showing septal thickening:
1. Lymphangitic carcinomatosis: irregular
Differential diagnosis ... Cardiogenic pulmonary ... #Clinical #Radiology ... Carcinomatosis #Mimic #Differential ... #Comparison #Table
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
arise within a mass ... without associated pulmonary ... #Clinical #Diagnosis ... #Radiology #CTChest ... Cyst #Emphysema #Comparison
The table on the left is the overall table for mediastinal masses.
In the next paragraphs we
The table on the ... Neurogenic Tumors - Benign ... masses #Diagnosis #Pulmonary ... #Radiology #Mediastinal ... #Mass #Differential
Fleischner Society recommendations for follow-up of nodules
Previous chest radiographs should be reviewed to determine if the
lesion has been stable ... lesions with a benign ... mm depends on clinical ... #Management #Radiology ... Society #Followup #Pulmonary