10 results
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Nodular pattern ... perilymphatic distribution ... Clinical #Radiology #HRCT ... CTChest #Nodular #Pattern ... #Comparison #Table
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
pattern The algorithm ... are visible, the pattern ... the nodules are diffuse ... Radiology #Pulmonary #HRCT ... NodularPattern #Nodular #Pattern
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Low Attenuation pattern ... Centrilobular emphysema ... Clinical #Radiology #HRCT ... LowAttenuation #Cystic #Pattern ... #Comparison #Table
The distribution of nodules shown on HRCT is the most important factor in making an accurate
nodules shown on HRCT ... in the nodular pattern ... Centrilobular distribution ... NodularPattern #Nodular #Pattern ... Perilymphatic #Comparison
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Low Attenuation pattern ... Centrilobular emphysema ... Clinical #Radiology #HRCT ... LowAttenuation #Cystic #Pattern ... #Comparison #Table
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
with a nodular pattern ... perilymphatic distribution ... CTChest #Nodular #Pattern ... #Differential #Comparison ... #Table #RadiologyAssistant
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
Nodular pattern( ... perilymphatic distribution ... Clinical #Radiology #HRCT ... CTChest #Nodular #Pattern ... #Comparison #Table
On the left a patient with ground glass pattern in a mosaic distribution.
Some lobules are involved
with ground glass pattern ... in a mosaic distribution ... presents with centrilobular ... are confluent, HRCT ... shows diffuse ground
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
Reticular pattern ... incidental finding in HRCT ... and perihilar distribution ... CTChest #Reticular #Pattern ... #Comparison #Table
Lymphomas and Lymphoproliferative Disorders - Differential Diagnosis Algorithm
Hodgkin Lymphoma ~40% - Characteristic For Reed-Sternberg (RS) Cells
Differential Diagnosis Algorithm ... - Bimodal Age Distribution ... lymphadenopathy more diffuse ... involvement, irregular pattern ... Lymphoproliferative #Disorders #Classification