3246 results
Causes of Hyperferritinemia - Differential Diagnosis
Ferritin > 1000
Ferritin is the storage form of iron. Increased hepcidin
Causes of Hyperferritinemia ... Decreased hepcidin levels ... will cause increased ... Most Common Causes ... 1% Most Common Causes
Adrenal Insufficiency - Diagnosis and Management Summary
Primary Adrenal Insufficiency:
Most Common Cause in the US: Autoimmune Adrenalitis
Other
: Most Common Cause ... Adrenalitis Other causes ... Causes of Secondary ... and a cortisol level ... minutes Cortisol level
Polycythemia - Differential Diagnosis Algorithm
Polycythemia itself isn’t a diagnosis. Like many things, it is a condition
an underlying cause ... Instead, pause, ... Check a level. ... ramping up EPO levels ... about secondary causes
Lesions of the Spinal cord - Spinal Cord Syndromes

Spinal cord lesions can result in permanent neurologic
Causes of spinal ... • Extrinsic Causes ... • Intrinsic Causes ... below the level ... infarction which can be caused
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
Low serum IgG level ... apart (unless levels ... Monitor trough levels ... to ensure serum levels ... DDX - Other causes
Radial Fracture Due to Parathyroid Carcinoma- ...A plain radiograph of the left arm showed a diaphyseal
parathyroid hormone level ... serum calcium level ... which is a rare cause ... parathyroid hormone levels ... and his calcium level
Causes of Hypokalemia - Differential Diagnosis Algorithm
Defining the cause of hypokalemia starts by measuring urinary K
Causes of Hypokalemia ... Defining the cause ... measuring urinary K level ... diagnosis #algorithm #causes
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
760 mm Hg at sea level ... average settings • Causes ... gas equation • Causes ... • Most common cause ... to hypoxemia • Causes
Spinal Cord Disorders - Differential Diagnosis Framework

Spinal cord neurological lesion:
Clinical findings:
 • Symptoms and signs below
Pain reported at level ... Non-compressive Spinal Cord Causes ... B12 and copper levels ... loss: Sensory level ... (1-5 levels below
Bleeding manifestations 
Petechiae are small, flat, red, discrete areas of skin bleeding that are typically <2
ecchymosis) is caused ... prolonged bleeding Levels ... has the lowest levels ... Platelet levels ... VWF antigen level