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Mediastinal Mass - Differential Diagnosis
Anterior Mediastinal Mass:
 • Thymus (Thymoma, carcinoma, hyperplasia, cyst)
 • Lymphoma
 •
- Differential ... • Bronchogenic cysts ... , Pericardial Cysts ... Tumors • Vascular Mases ... Diagnosis #pulmonary
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
arise within a mass ... them from cysts ... Cysts occur without ... associated pulmonary ... Cysts usually contain
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... When the cysts have ... seen and in many cases ... #Diagnosis #Radiology ... #Pulmonary #CXR
Honeycombing is defined by the presence of small cystic spaces with irregularly thickened walls composed of
Honeycomb cysts ... regardless of their cause ... Subpleural honeycomb cysts ... which subpleural cysts ... #Differential #
Radiologists use many terms to describe areas of decreased density or lucencies within the lung, like
the lung, like cyst ... since in many cases ... #CXR #Lucency #Differential ... #Lung #Pulmonary ... #Diagnosis #Radiology
The table on the left is the overall table for mediastinal masses.
In the next paragraphs we
Tumors - Benign Cysts ... tumors - Foregut cysts ... #Diagnosis #Pulmonary ... #Radiology #Mediastinal ... #Mass #Differential
CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
in HIV / AIDS - Differential ... present in 15% of cases ... lesions < 4cm + mass ... "punched-out" cystic ... opportunistic #InfectiousDiseases
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
Hypercoagulable (APLAS) Microbiology ... positive in 90% of IE cases ... Cerebral > Splenic, pulmonary ... Marantic (NTBE) Differential ... diagnosis #management #cardiology
Endocarditis - Overview and Differential Diagnosis Framework

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV
Hypercoagulable (APLAS) Microbiology ... positive in 90% of IE cases ... Cerebral > Splenic, Pulmonary ... #Diagnosis #cardiology ... #infectiousdiseases