66 results
Important Causes of Diplopia 
TIER 1-CRITICAL
Basilar artery thrombosis, Botulism, Basilar meningitis, Aneurysmn
TIER 2-EMERGENT:
Vertebral dissection, Myasthenia gravis,
Important Causes ... Diplopia TIER 1-CRITICAL ... , Orbital apex syndrome ... URGENT: Brainstem tumor ... differential #diagnosis #ophthalmology
Hypermagnesemia - Etiologies by Mechanism
Renal Failure 
Excessive Mg Administration 
 - Massive PO intake
Mechanisms - Tumor ... lysis syndrome ... High #Magnesium #Table ... #Causes #Management
Gerstmann Syndrome
1) Finger agnosia - Inability to name their own fingers, affecting both sides
2) Right-left confusion
Gerstmann Syndrome ... patient is still able ... to copy Causes ... : Stroke (main cause ... Brain Injury, Tumor
Horner's Syndrome: Loss of sympathetic nervous system input to (in this case) right eye. 
Note that
Horner's Syndrome ... was due to tumor ... UCSD Catalog of Clinical ... Images #Clinical ... #Ophthalmology
Isocoria - Pupillary Defects - Differential Diagnosis Algorithm
Relative Afferent Pupil Defect
 • Optic Neuritis
 • Ischemic
• Optic Nerve Tumor ... Midbrain (Parinaud's Syndrome ... ): • Tumor • ... Diagnosis #Algorithm #Causes ... #Ophthalmology
Leukostasis vs Tumor Lysis Syndrome
Leukostasis:
 • Pathophysiology: Large, immature blasts and high WBC count cause hyperviscosity
Lysis Syndrome ... Leukostasis: • Pathophysiology ... high WBC count cause ... hyperviscosity syndrome ... • Pathophysiology
Central Retinal Vein Occlusion (CRVO)
 - Pathophysiology not fully understood; possibly due to thrombus located in
Occlusion (CRVO) - Pathophysiology ... Second most common cause ... disease (Most common cause ... retinopathy) #Clinical ... #Ophthalmology
Refeeding Syndrome Overview

What Is It?
	• Electrolyte/fluid shifts caused by initiation of nutrition in severely malnourished patient.
Electrolyte/fluid shifts caused ... changes and may cause ... severe clinical ... • Tumor-induced ... Differential #Diagnosis #Pathophysiology
Lesions of the Spinal cord - Spinal Cord Syndromes

Spinal cord lesions can result in permanent neurologic
Causes of spinal ... • Extrinsic Causes ... - Abscess - Tumor ... • Intrinsic Causes ... infarction which can be caused
Adie's Pupil
What? Unknown nature & benign
 • Regular and mildly dilated pupil (4-6mm);
 • Light-near dissociaton;
Holmes-Adie Syndrome ... dissociation • Other causes ... trauma/orbital tumor ... PhysicalExam #neurology #ophthalmology