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Posterior Mediastinal Mass - Differential Diagnosis
 • Neurofibroma
 • Neurosarcoma
 • Neuroblastoma
 • Ganglioneuroma
 • Meningocele
Posterior Mediastinal ... Mass - Differential ... • Small cell lung ... #Diagnosis #pulmonary ... #radiology #chest
Lung Segment Anatomy Annotated on Chest CT
Right Lung:
 • Upper Lobe: Apical, Posterior, Anterior
 • Middle
Annotated on Chest ... Lobe: Apical, Posterior ... lobes #Segments #Chest ... #CT #CTChest #pulmonary ... #clinical #radiology
Radiographic Features of Pulmonary Diseases
 - Pneumonia
 - Atelectasis
 - Emphysema
 - Pneumothorax
 - Effusion
 -
Interstitial - Nodular ... #Diseases #Radiology ... #Patterns #Lung ... #CXR #XRay #ChestCT ... #Differential #
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
Upper lung zone ... edema #Diagnosis #Radiology ... #Pulmonary #HRCT ... #ChestCT #Differential ... #Table #Distribution
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
Ring-Enhancing Lesions ... Compatible syndrome + MRI ... • 80% with lung ... #Brain #differential ... diagnosis #causes #radiology
Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
and cardiogenic pulmonary ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #ChestCT #Differential ... #Table #Distribution
Appearance of Liver Lesions on Various Imaging Modalities
 • Computed Tomography (CT) - Arterial Phase, Portal
Appearance of Liver Lesions ... Resonance Imaging (MRI ... #POCUS #radiology ... #differential # ... diagnosis #comparison #table
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
or air-filled lesions ... - Emphysema - Lung ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... LowAttenuation #Differential
Posterior Ankle Impingement (Os Trigonum) Syndrome - MSK Radiology
Imaging Findings:
 • Os trigonum which has marrow
Syndrome - MSK Radiology ... hallucis longus Differential ... torn ligament on MRI ... osteochondral lesion ... #clinical #Radiology
Size
A solitary pulmonary nodule (SPN) is defined as a single intraparenchymal lesion less than 3 cm
Size A solitary pulmonary ... high risk for lung ... listed in the table ... #EBM #Radiology ... #Pulmonary #SolitaryPulmonaryNodule