14 results
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
The fourth pattern ... low attenuation pattern ... on the basis of HRCT ... #Diagnosis #Radiology ... Differential #Diagram #Comparison
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Low Attenuation pattern ... Clinical #Radiology #HRCT ... #CTChest #LowAttenuation ... #Cystic #Pattern ... #Comparison #Table
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Low Attenuation pattern ... Clinical #Radiology #HRCT ... #CTChest #LowAttenuation ... #Cystic #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 ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... NodularPattern #Nodular #Pattern
The distribution of nodules shown on HRCT is the most important factor in making an accurate
nodules shown on HRCT ... making an accurate diagnosis ... in the nodular pattern ... NodularPattern #Nodular #Pattern ... Perilymphatic #Comparison
Hair Loss (Alopecia) - General (Diffuse and Focal) Differential Diagnosis Algorithm

DIFFUSE
Scarring - Irreversible-biopsy required
 • Lupus
) Differential Diagnosis ... Algorithm DIFFUSE ... planopilaris Pattern ... #Differential #Diagnosis ... #Algorithm #causes
Intrapartum Abnormal Fetal HR Tracing - Causes of Variability & Decelerations - Differential Diagnosis Algorithm
Minimal/Absent Variability
- Differential Diagnosis ... Algorithm Minimal ... Prematurity • Medications ... hypoxia Sinusoidal Pattern ... #Algorithm #Causes
Lymphomas and Lymphoproliferative Disorders - Differential Diagnosis Algorithm
Hodgkin Lymphoma ~40% - Characteristic For Reed-Sternberg (RS) Cells
- Differential Diagnosis ... Algorithm Hodgkin ... lymphadenopathy more diffuse ... involvement, irregular pattern ... #differential #algorithm
On the left a patient with ground glass pattern in a mosaic distribution.
Some lobules are involved
with ground glass pattern ... The differential diagnosis ... are confluent, HRCT ... shows diffuse ground
Basic Interpretation
A structured approach to interpretation of HRCT involves the following questions:
What is the dominant HR-pattern:
reticular
nodular
high
interpretation of HRCT ... the dominant HR-pattern ... bronchiectasis) #Diagnosis ... Radiology #Pulmonary #HRCT ... Interpretation #Algorithm