149 results
Retinoblastoma: Pathogenesis and clinical findings
 • Sporadic mutation -> One allele of RB1 tumor suppressor gene
Pathogenesis and clinical ... allele of RB1 tumor ... allele of RB1 tumor ... pathophysiology #ophthalmology ... #diagnosis #signs
Causes of Peripheral Weakness with Sensory Changes - Differential Diagnosis Algorithm
Radiculopathy:
 • Disc
 • Spondylosis
 •
- Differential Diagnosis ... Spondylosis • Tumor ... • Trauma • Tumor ... • Diabetes • Tumor ... Weakness #Sensory #Neurology
Neuro-OphthaImoIogy - Visual Field Defects - Localization Map
 - Optic Nerve Lesion (Monocular vision loss)
 -
Neuro-OphthaImoIogy ... Pituitary/metastatic tumor ... NeuroOphthaImoIogy #Neurology ... #Differential #Diagnosis ... Anatomy #Causes #Ophthalmology
Causes of Facial Weakness - Differential Diagnosis Algorithm
Forehead Sparing = Central cause
  - Most commonly
- Differential Diagnosis ... - Intracranial tumor ... Infection, Compression Tumor ... #Differential #Diagnosis ... Algorithm #Causes #neurology
Bilateral Acute Vision Loss - Differential Diagnosis Algorithm

Complete/ Partial Homonymous Hemianopia
 • Infarct
 • Intracranial Hemorrhage
- Differential Diagnosis ... Hemorrhage • Tumor ... #Differential #Diagnosis ... Algorithm #Causes #Ophthalmology
Malignant Bone Tumors: Pathogenesis of X-ray appearance

 • Metastatic bone tumors (aka. cancerous cells from systemic
Malignant Bone Tumors ... Signs/Symptoms: ... between bone and tumor ... around the bone tumor ... Malignant #Radiology #Diagnosis
Isocoria - Pupillary Defects - Differential Diagnosis Algorithm
Relative Afferent Pupil Defect
 • Optic Neuritis
 • Ischemic
- Differential Diagnosis ... • Optic Nerve Tumor ... Syndrome): • Tumor ... #Differential #Diagnosis ... Algorithm #Causes #Ophthalmology
Diagram of different types of bone tumors that can occur around the knee on XRay -
types of bone tumors ... • Giant cell tumor ... blade of grass sign ... #Knee #Bone #Tumors ... #Diagnosis #Bony
Parinaud's Syndrome
What?
 - Impaired upgaze
 - Light-near dissociation
 - Convergence retraction nystagmus
 - Eyelid retraction (Collier's
retraction (Collier's sign ... Pineal region tumors ... → "setting sun sign ... Parinauds #Syndrome #diagnosis ... #pineal #neurology
Important Causes of Diplopia 
TIER 1-CRITICAL
Basilar artery thrombosis, Botulism, Basilar meningitis, Aneurysmn
TIER 2-EMERGENT:
Vertebral dissection, Myasthenia gravis,
Diplopia TIER 1-CRITICAL ... URGENT: Brainstem tumor ... #differential #diagnosis ... #ophthalmology