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Mediastinal Mass - Differential Diagnosis
Anterior Mediastinal Mass:
 • Thymus (Thymoma, carcinoma, hyperplasia, cyst)
 • Lymphoma
 •
- Differential Diagnosis ... Sarcoma, Metastatic Lung ... Posterior Mediastinal ... #pulmonary #anterior ... #middle #posterior
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
arise within a mass ... the prominent feature ... the surrounding lung ... associated pulmonary ... Emphysema #Comparison #RadiologyAssistant
Monteggia Fracture 
Fracture of proximal ulnar shaft with radial head dislocation. Remember “MUGR” to recall where
: Neuropraxia (posterior ... long arm (with ... • If stable ... DC with orthopedic ... Radiology #XRay #Diagnosis
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... low attenuation (table ... When the cysts have ... #Pulmonary #CXR ... #Differential #RadiologyAssistant
The table on the left is the overall table for mediastinal masses.
In the next paragraphs we
Thyroid masses #Diagnosis ... #Pulmonary #Radiology ... #Mediastinal #Mass ... Anterior #Middle #Posterior ... #RadiologyAssistant
Size
A solitary pulmonary nodule (SPN) is defined as a single intraparenchymal lesion less than 3 cm
diameter is called a mass ... cohort at high risk ... for lung cancer ... listed in the table ... MalignancyRate #Rate #RadiologyAssistant
Preoperative Risk Evaluation

Major Pre-Op Questions:
1. Does the patient have any modifiable risk factors that could be
murmur 3/6) - Pulmonary ... Intraabdominal - Orthopedic ... days before Pulmonary ... unless prior heart/lung ... stratification #diagnosis
Cystic lung disease
Lung cysts are defined as radiolucent areas with a wall thickness of less than
Lung cysts are ... listed in the table ... #Diagnosis #Radiology ... #Pulmonary #Cystic ... #Differential #RadiologyAssistant
Risk factors
Defining high- or low-risk is currently more difficult than it was in the old guideline.
Previously
smoking, history of lung ... characteristics alone (See Table ... #Diagnosis #Epidemiology ... #Radiology #Pulmonary ... PulmonaryNodule #Nodule #RadiologyAssistant