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Mediastinal masses are discussed in more detail in Mediastinal masses.
Here is just a brief overview. #Diagnosis
Mediastinal masses ... in Mediastinal masses ... #Differential #Table ... #Anterior #Middle
Hoffman's sign. Even in this specific case, accompanied by a clonus outline (rhythmic contractions). The median
this specific case ... the patient's middle ... finger. 2) Ask ... of the flexed middle
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Causes of Interstitial Lung Disease - Differential Diagnosis Algorithm
Idiopathic Interstitial Pneumonia
 • (UIP) Usual Interstitial Pneumonia
Causes of Interstitial ... with relatively little ... , worse at the bases ... Amy Chung, MD, MSc ... Diseases #ILD #Causes
Ulcerative Colitis vs Crohn's Disease - IBD Comparison Table
Ulcerative Collitis
 - Location
IBD Comparison Table ... ileum • Most cases ... Amy Chung, MD, MSc ... IBD #Comparison #Table
Cauda Equina Syndrome
Causes:
 • Large lumbar degenerative disc herniation (central)
 • Severe lumbar spondylosis
 • Neoplasm
Equina Syndrome Causes ... Incontinence • Saddle ... CaudaEquina #Syndrome #MSK
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
correctly diagnose a case ... that any given case ... implies being able ... it has a narrow focus ... #Calculation #Table
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Orthopedic Essentials - Spinal Trauma and Spine Classification 
DENIS THREE COLUMN CONCEPT
Anterior column:
annulus fibrosus Middle ... process fracture Stable ... fractures: Don't cause ... deficit, still able
Hearing Loss - Differential Diagnosis Framework

Hearing Loss Types:
• Conductive
• Sensorineural
• Mixed
Presbycusis is the most common type
Head and neck masses ... tympanic membrane and middle ... Otitis externa • Middle ... cause unknown) ... Noise trauma ○ MS
Sarcoidosis - Diagnosis and Management Summary
Epidemiology
1) High incidence in Scandinavian countries (11-24 cases per 100,000 individuals
countries (11-24 cases ... Americans (18-71 cases ... symptoms are not caused ... Self-limiting, chronic but stable ... anterior/posterior MSK
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
time you have a case ... Active (or too little ... differential #diagnosis #table