90 results
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
CNS Ring-Enhancing ... Compatible syndrome + MRI ... + toxo IgG • CNS ... 30% present w/ CNS ... differential #diagnosis #causes
CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
present in 15% of cases ... hemorrhage • CSF ... Imaging: - MRI ... Demyelinating disease caused ... comparable to CSF
Balamuthia vs Acanthamoeba vs Naegleria - Comparison
Exposure - Host - CNS disease - CNS spread -
Exposure - Host - CNS ... disease - CNS spread ... - CSF - Ameba in ... CSF - Brain MRI ... Naegleria #Comparison #Table
Guillain–Barré syndrome (GBS)
(aka: Landry–Guillain–Barré–Strohl syndrome:
	Most common cause of acute flaccid paralysis
	Rapidly progressive ascending paralysis & areflexia
	Autonomic
 Most common cause ... Multiple Sclerosis: CNS ... multiple lesions on MRI ... cord lesion on MRI ... sensory level, MRI
Findings in Cerebrospinal Fluid in Different Causes of Meningitis

#CSF #Fluid #Analysis #Interpretation #Meningitis #Normal #Bacterial #Viral
Fluid in Different Causes ... Meningitis #CSF ... Viral #Comparison #Table
Listeriosis Summary - Listeria Monocytogenes
Pathogen: Listeria Monocytogenes - Gram-positive rod, Aerobic, facultative anaerobe, motile, beta-hemolytic, Non-spore-forming
Risk
Pregnancy • CNS ... Invasive disease) • CSF ... (CNS Infection) ... • MRI / CT if
Listeriosis Summary - Listeria Monocytogenes
Pathogen: Listeria Monocytogenes - Gram-positive rod, Aerobic, facultative anaerobe, motile, beta-hemolytic, Non-spore-forming
Risk
Pregnancy • CNS ... Invasive disease) • CSF ... (CNS Infection) ... • MRI / CT if
Causes of Headache - Differential Diagnosis Algorithm
Primary: Tension, Migraine, Cluster
Extracranial: Medications, Sinusitis, TMJ disorder, Cervicogenic, Glaucoma,
Causes of Headache ... Differential Diagnosis Algorithm ... Metastatic disease CSF ... Differential #Diagnosis #Causes ... #algorithm
McDonald Criteria for Diagnosis of Multiple Sclerosis
 • 2 or more attacks, 2 or more lesions
Dissemination in space on MR ... implicating a different CNS ... implicating a different CNS ... implicating a different CNS ... - Positive CSF
Causes of Relative Bradycardia - Note the propensity for intracellular organisms.
Infectious: 
Legionella, Psittacosis, Q fever, Typhoid
Causes of Relative ... : ß-blockers, CNS ... #bradycardia #Causes ... infectiousdiseases #table