27 results
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Nodular LCH: - Sarcoidosis ... : 'signet ring sign ... central dot. - LIP #Clinical ... #Comparison #Table ... #RadiologyAssistant
The PA-film shows a silhouette sign of the left heart border.
Even without looking at the lateral
shows a silhouette sign ... caused by Sterptococcus ... #Clinical #Radiology ... #CXR #Pneumonia ... SilhouetteSign #RadiologyAssistant
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
stage before the ... typical cysts appear ... #Clinical #Radiology ... #Pattern #Comparison ... #Table #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
stage before the ... typical cysts appear ... #Clinical #Diagnosis ... #Radiology #Pulmonary ... #Table #RadiologyAssistant
Here are the most common examples of these four patterns on a chest x-ray (click image
mass - Solitary Pulmonary ... Masses Atelectasis ... #Diagnosis #Clinical ... #Radiology #CXR ... Consolidation #Patterns #RadiologyAssistant
Tree in Bud Sign
The Tree-in-Bud sign represents Endobronchial spread in a linear branching pattern and centrilobular
centrilobular nodules ... centrilobular nodules ... bacterial/viral/fungal pneumonia ... like cystic fibrosis ... #diagnosis #clinical
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
patterns: reticular, nodular ... low attenuation (table ... seen and in many cases ... Diagnosis #Radiology #Pulmonary ... #Differential #RadiologyAssistant
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
Unknown • 6-7 cases ... - Clinical manifestations ... - Imaging: • CXR ... irregular lines, nodular ... , Pulmonary lymphoma
Based on the images alone, it is usually not possible to determine the cause of the
determine the cause ... Lobar pneumonia ... in fact this is nodular ... #Radiology #CXR ... #RadiologyAssistant
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
diagnosis The table ... caused by streptococcus ... Diagnosis #Radiology #Pulmonary ... #CXR #Consolidation ... #RadiologyAssistant