17 results
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
staining): • Low Complement ... Post-strep GN, Lupus ... Idiopathic • Normal Complement ... #differential #diagnosis ... #algorithm #rheumatology
Causes of Hypocomplementemia - CHAMPS Mnemonic
C - Cryoglobulinemia (85%), C3 glomerulopathy, cirrhosis
H - Heavy Chain deposition
Membranoproliferative glomerulonephritis ... Post/pauci immune glomerulonephritis ... S - Systemic Lupus ... Hypocomplementemia #Low #Complement ... CHAMPS #Mnemonic #diagnosis
Pulmonary Renal Syndromes and Mimics - Differential Diagnosis Framework
Diffuse alveolar hemorrhage + rapidly progressive glomerulonephritis
90%:
 -
- Differential Diagnosis ... Framework Diffuse ... rapidly progressive glomerulonephritis ... anti-GBM) 10%: - Low Complement ... #Differential #Diagnosis
Causes of Hematuria - Differential Diagnosis Algorithm
Red blood cells on urine microscopy. Must exclude false positives
- Differential Diagnosis ... Algorithm Red ... IgA, post-strep, lupus ... • Lupus glomerulonephritis ... #Algorithm #Causes
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
Complement activation ... Post-streptococcal glomerulonephritis ... , and systemic lupus ... Pathophysiology #Allergy #Diagnosis ... #Reactions #Table
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
Summary table of ... they activate complement ... Post-streptococcal glomerulonephritis ... , Systemic lupus ... types #allergy #table
Causes of Diffuse Lymphadenopathy - Differential Diagnosis Algorithm
Reactive:
 - Systemic Inflammatory
     •
Causes of Diffuse ... - Differential Diagnosis ... Algorithm Reactive ... • Systemic Lupus ... #Algorithm #Causes
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
Definition: Diffuse ... alveolar hemorrhage + Glomerulonephritis ... Differential Diagnosis ... Complex: Systemic lupus ... #differential #diagnosis
Hair Loss (Alopecia) - General (Diffuse and Focal) Differential Diagnosis Algorithm

DIFFUSE
Scarring - Irreversible-biopsy required
 • Lupus
) Differential Diagnosis ... Algorithm DIFFUSE ... • Discoid lupus ... #Differential #Diagnosis ... #Algorithm #causes
Causes of Acute Kidney Injury (AKI) - Differential Diagnosis Algorithm
Acute Kidney Injury (AKI) - Acute increase
- Differential Diagnosis ... Algorithm Acute ... Rapidly Progressive Glomerulonephritis ... IgA, post-strep, lupus ... #Algorithm #Causes