10 results
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
polyangiitis, Microscopic ... Basement Membrane ... • Urinalysis (proteinuria ... ab, anti-GBM ab ... differential #diagnosis #nephrology
Causes of Proteinuria - Differential Diagnosis Algorithm
Persistent Proteinuria >150mg/d protein present on repeat testing including overnight
Causes of Proteinuria ... proliferative • Anti-GBM ... polyangiitis (GPA) / microscopic ... Minimal change disease ... #Nephrology #Differential
Rapidly Progressive Glomerulonephritis (RPGN) 
 - Loss of kidney function over a short period of tirne
of glomerular disease ... (hematuria, proteinuria ... Basement Membrane ... (GBM) • Typically ... Linear, ribbon-like GBM
Anti-GIomeruIar Basement Membrane Disease (Goodpasture's Disease)

What is it? A small vessel vasculitis with circulating antibodies directed
Anti-GIomeruIar ... Diagnosis: • Anti-GBM ... weeks By Tess Litchman ... #Goodpastures #AntiGBM ... #diagnosis #nephrology
Summary of characteristic abnormalities of selected glomerular diseases
Light Microscopy (LM) - Immunofluorescence Microscopy (IM) - Electron
selected glomerular diseases ... (IM) - Electron ... Microscopy (EM) ... Amyloid RPGN • Anti-GBM ... #nephrology #pathology
Causes of Hematuria - Differential Diagnosis Algorithm
Red blood cells on urine microscopy. Must exclude false positives
Causes of Hematuria ... cells on urine microscopy ... nephropathy • Thin GBM ... wall) • Anti-GBM ... nephrotic range) proteinuria
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
polyangiitis) Anti-basement ... life-threatening diseases ... ANCA antibody, Anti-GBM ... usually low in anti-GBM ... Goodpasture's cause
Algorithm - Approach to the differential diagnosis of the patient presenting with overt glomerular proteinuria. CMV
Cytomegalovirus; GBM ... = glomerular basement ... impairment), heart disease ... Nephrocalcinosis causes ... nephrotic #syndrome #nephrology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
• Hematuria, proteinuria ... PR3-ANCA): • Microscopic ... tract, and often causes ... glomerulonephritis) • Anti-GBM ... Dx: GPA, EGPA, microscopic
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
• Hematuria, proteinuria ... (PR3-ANCA)): Microscopic ... tract, and often causes ... abdominal pain and GN Anti-GBM ... Urticarial Vasculitis (anti-C1q