7 results
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
lesions • 80% with lung ... , may also see skin ... Sarcoidosis • Neuro Behcets ... Lesions #Brain #differential ... causes #radiology #neurology
Behçet's Syndrome
Systemic disease associated with inflammation of multiple organs, small-vessel vasculitis and large-vessel vasculopathy
Epidemiology:
 • Young
injury) • Neurologic ... symptoms (headache ... disease) Differential ... diagnosis #management #signs ... #symptoms #rheumatology
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
in HIV - Differential ... • CT: Halo sign ... Lymphadenopathy, CNS ... Constitutional symptoms ... Infections #HIV #AIDS
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
purpura: Strong sign ... , neurologic, and ... • Progressive symptoms ... vasculitis • Behcet ... chorioretinitis, CNS
Mycoses

HISTOPLASMOSIS
• Inhalation of conidia → Yeast → travel to lymph nodes → spread in body
• Bird
yeast • At risk: AIDS ... especially the CNS ... MC: CNS CSF: • ... change in the lungs ... nails, bronchi, lungs
Transverse Myelitis Overview

Focal inflammatory disorder of the spinal cord resulting in rapid onset of weakness, sensory
that results in CNS ... • Bilateral signs ... and/or symptoms ... diagnosis #management #neurology ... #differential
Autoimmune Myositis - Differential Diagnosis Framework

Inflammatory Myopathies: Commonly symmetric proximal muscle weakness, no substantial muscle pain
Autoimmune Myositis - Differential ... ) • Anti-Mi2 (skin ... papules and Gottron sign ... ) • Shawl sign ... #rheumatology #differential