10 results
Causes of Polycythemia (Erythrocytosis) - Differential Diagnosis Algorithm
Relative - Normal RBC Mass / Decreased Plasma Volume
Causes of Polycythemia ... Splenomegaly, Increased PMNs ... • Polycythemia ... Diagnosis #Algorithm #Causes ... #Hematology
Polycythemia - Differential Diagnosis Algorithm
Polycythemia itself isn’t a diagnosis. Like many things, it is a condition
an underlying cause ... Better call hematology ... JAK2 V617F) and MPNs ... about secondary causes ... Algorithm #workup #hematology
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
CNS Ring-Enhancing ... Compatible syndrome + MRI ... RingEnhancing #Lesions #Brain ... differential #diagnosis #causes ... #radiology #neurology
Gout (Gouty Arthritis) - MSK Radiology
Imaging Findings:
 • Eccentric soft-tissue densities surrounding the third proximal interphalangeal
Arthritis) - MSK Radiology ... Case description ... • PVNS/Giant Cell ... #clinical #Radiology ... diagnosis #msk #rheumatology
CNS Manifestations of Systemic Lupus Erythematosus (SLE)

Clinical Manifestations: Demyelinating Syndrome, Headache, Movement disorders, Seizure disorders, Aseptic
CNS Manifestations ... autoantibodies that will cause ... thrombosis and/or blood-brain ... Erythematosus #SLE #CNS ... #neurology #rheumatology
Common MRI Sequences - Basic MRI Brain Interpretation

 • T1 Sequence - T1 is for anatomy.
Common MRI Sequences ... - Basic MRI Brain ... hematomas and pus ... teachplaygrub #MRI ... #Sequences #Radiology
Leigh Syndrome 
History: 19-month-old girl with hypotonia, developmental 
delay, failure to thrive, and bilateral optic disc
subthalamic nuclei, pons ... patterns (this case ... Syndrome #Clinical #MRI ... #Brain #Diagnosis ... #Radiology
SAPHO Syndrome Summary

What?
SAPHO syndrome is a rare chronic inflammatory disorder of bone, joint, and skin characterized
blisters containing pus ... Rule out other causes ... - MRI: inflammation ... SAPHO #Syndrome #Rheumatology ... diagnosis #management #Dermatology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
May develop in pts ... oligoclonal bands • MRI ... tract, and often causes ... chorioretinitis, CNS ... Differential #Diagnosis #Rheumatology
Cryptococcal meningitis on T2 MRI
30 M from sub-Saharan Africa presents w/ progressive Headache x1 mo, +neck
meningitis on T2 MRI ... bubble sign on mri ... Nausea & vomiting ... #Brain #clinical ... #radiology