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Lung Segment Anatomy Annotated on Chest CT
Right Lung:
 • Upper Lobe: Apical, Posterior, Anterior
 • Middle
Annotated on Chest ... Lobe: Lateral, Medial ... Lobe: Superior, Medial ... #CT #CTChest #pulmonary ... #clinical #radiology
On the left three different patients with lung cysts.
From left to right: Lymphangiomyomatosis, LIP and Langerhans
patients with lung ... cysts. ... #Clinical #Diagnosis ... #Radiology #CTChest ... #Cystic #Comparison
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
central dot. - LIP #Clinical ... #Diagnosis #Radiology ... #CTChest #Cystic ... #Cysts #Differential ... #Comparison #Table
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
child-bearing age; no history ... ; smoking history ... #Clinical #Radiology ... #HRCT #CTChest ... #Pattern #Comparison
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
cysts (LAM, LIP ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... LowAttenuation #Differential ... #Diagram #Comparison
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
; smoking history ... (LAM): regular cysts ... #Clinical #Radiology ... #HRCT #CTChest ... #Pattern #Comparison
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
the surrounding lung ... associated pulmonary ... #Clinical #Diagnosis ... #Radiology #CTChest ... Emphysema #Comparison
There is a hydropneumothorax.
Notice the air-fluid level (blue arrow).
The upper lobe is still attached to the
attached to the chest ... cyst in the upper ... airways leading to pulmonary ... cyst formation ... #Clinical #Radiology
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... in interstitial lung ... is interstitial lung ... #Diagnosis #Radiology ... #Pulmonary #CXR
Upper Lobe Lung Diseases - STAR CHASERS Mnemonic

S - Silicosis
T - Tuberculosis
A - Ankylosing Spondylitis
R -
Radiation C - Cystic ... caused by a rigid chest ... clearance: - Cystic ... #diseases #differential ... #STARCHASERS #radiology