SA Medical - General Medicine And Imaging of Disease

Cerebral aneurysm Cerebral aneurysm ·           Symptoms – history of migraines, persistent headache with several months duration, different from usual headache ·           Imaging o     Computer tomography – CT §    Fast and readily available §    Excellent for detection of acute hemorrhage o     Magnetic resonance imaging - MRI §    Higher soft tissue resolution / contrast §    Multiplanar capability o     Plain film – not indicated ·           Normal Head CT o     Blood, acute §    High attenuation – bright o     Midline – is symmetry preserved o     Ventricles o     Cisterns o     Sulci o     Grey white matter interface o ...

LCH = Langerhans Cell Histiocytosis DDx for bone lesions showing bone sequestrum Taken from ACR case-in-point case dated 17.11.u2010

DDx for CRAZY-PAVING PATTERN seen on HRCT BAC = broncho-alveolar cell carcinoma PCP = pneumocystic carinii pneumonia NSIP = non-specific interstitial pneumonia ARDS = acute respiratory distress syndrome OP = organising pneumonia

This is the DDx for a paranasal sinus lesion ..... i think also taken from the case review series ....  How many times a radiologist would see a lesion in the PNS during a routine brain CT and tend to report it as sinusitis .... It would be helpful if you storm your brain and think about other differentials ... each one of these has a different appearance than the other .... The violet branch has been added by myself during studying of other diseases that I found it would be helpful to remember them during thinking about the DDx of a PNS mass ...