29 results
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
- Emphysema - Lung ... #Diagnosis #Radiology ... #Differential #Diagram ... #Comparison #Honeycombing ... Emphysema #SignetRing #RadiologyAssistant
Pathogens in Pneumonia

Here is a quick review of the pathogens causing pneumonia (useful for enumerating differentials
smoking. structural lung ... Burkholderia — structural lung ... metapneumovirus - Coronavirus ... MAC (structural lung ... Causes #Agents #Diagnosis
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
Upper lung zone ... bronchiolitis (RB-ILD ... Pulmonary edema #Diagnosis ... #Upper #Lower #RadiologyAssistant
On the left three different patients with lung cysts.
From left to right: Lymphangiomyomatosis, LIP and Langerhans
patients with lung ... #Clinical #Diagnosis ... CTChest #Cystic #Comparison ... Histiocytosis #RadiologyAssistant
Tree-in-bud
In centrilobular nodules the recognition of 'tree-in-bud' is of value for narrowing the differential diagnosis.
Tree-in-bud describes
the differential diagnosis ... identified in the lung ... #Diagnosis #Pathophys ... CTChest #TreeInBud #Diagram ... #RadiologyAssistant
Persistence of clinically relevant viruses on dry inanimate surfaces

Most common viruses persist on surfaces for days
The novel coronavirus ... days to 3 months Coronavirus ... day to 8 weeks (wild ... How long do nosocomial ... infectiousdiseases #diagnosis
Multi-System Inflammatory Syndrome in Children (MIS-C) vs. Kawasaki Disease
CDC Case Definition for MIS-C;
 • < 21
• < 21 years old ... MISC #Kawasaki #Comparison ... #diagnosis #peds ... pediatrics #COVID19 #Coronavirus
Connective tissue disease-associated interstitial lung diseases

LIP: lymphoid interstitial pneumonia. NSIP: nonspecific interstitial pneumonia. OP: organizing pneumonia.
disease-associated interstitial lung ... ConnectiveTissueDiseases #ILD ... LungDisease #CTILD #Diagnosis ... #Differential #Comparison
More than 100 entities manifest as diffuse lung disease.
Fortunately only about 10 of these account for
different lists of diagnoses ... 80 - 90% of all diagnoses ... some of them the old ... #Diagnosis #Radiology ... Mnemonic #HRCT #RadiologyAssistant
The distribution of nodules shown on HRCT is the most important factor in making an accurate
making an accurate diagnosis ... structures of the lung ... #Diagnosis #Radiology ... Perilymphatic #Comparison ... #Diagram #RadiologyAssistant