13 results
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
lung disease comes ... low attenuation (table ... a CXR the most common ... in Langerhans cell ... #Diagnosis #Radiology
High Attenuation pattern 
1. Chronic eosinophilic pneumonia with peripheral areas of ground glass opacity.
2. Sarcoid end-stage
with peripheral areas ... presenting as areas ... Broncho-alveolar cell ... #HRCT #CTChest ... #Comparison #Table
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
listed in the table ... Before we call these ... are also common ... #Diagnosis #Radiology ... #Pulmonary #CTChest
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
low attenuation areas ... Langerhans cell ... #Clinical #Radiology ... #HRCT #CTChest ... #Comparison #Table
Primary Bone Tumors - Differential Diagnosis Algorithm 

Metastatic - Most common tumour in adults
 - Breast
Differential Diagnosis Algorithm ... Metastatic - Most common ... in adults - Breast ... - Thyroid - Lung ... Non-Malignant • Giant Cell
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
infiltration by cells ... results in a pattern ... is relatively common ... differential diagnosis (Table ... Pulmonary #HRCT #CTChest
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
to impaired B-cell ... • Chronic lung ... - gastric and breast ... Granulomatous lymphocytic interstitial ... Chest CT: • Ground-glass
Lung abnormalities mostly present as areas of increased density, which can be divided into the following
mostly present as areas ... solitary or multiple Interstitial ... Less frequently areas ... published soon: Chest ... #CXR #Lung #Patterns
Palpable Skin Crepitus on Physical Exam

Notice these air bubbles under the skin. An 86-year-old woman with
neck (shown in video ... travels from these areas ... and perivascular interstitium ... in subcutaneous areas ... examination, the most common
On the left a patient who is treated with cytotoxic drugs for a hematologic malignancy.
The radiographic
radiographic findings are areas ... and non-specific interstitial ... consider drug-related lung ... #Clinical #Radiology ... #CTChest #DrugInduced