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

Immune Complex Mediated (granular staining):
Complement: Post-strep GN ... , Lupus Nephritis ... Purpura Anti-GBM antibodies ... #diagnosis #algorithm ... #rheumatology
ANA Patterns and Associated Rheumatic Diseases:
 • Homogeneous: Systemic lupus erythematosus (SLE), Mixed connective tissue disease
ANA Patterns and ... #Antinuclear #Antibodies ... #ANA #patterns ... #rheumatology #diagnosis ... #differential
Antinuclear Antibodies (ANA)
ANA or Anti-NucIear Antibody refers to antibodies against antigens in the nucleus → like
Antinuclear Antibodies ... Antibody refers to antibodies ... #Antinuclear #Antibodies ... #rheumatology #diagnosis ... #differential
Systemic Lupus Erythematosus - Diagnosis
Manifestations:
 - Arthritis 69%
 - Malar rash 40%
 - Fever 36%
 -
SLE-Related Auto-Antibodies ... : - ANA 95-100% ... (aPL) 30-45% Differential ... Diagnosis and Lupus ... #rheumatology
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
Differential Diagnosis ... and the aPTT are ... antiphospholipid antibodies ... #differential # ... hematology #coagulation
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
antiphospholipid antibodies ... antiphospholipid antibodies ... Prolonged #Causes #diagnosis ... #differential # ... hematology #coagulation
Myositis and Myopathies
Polymyositis 
 • Progressive, symmetric muscle weakness 
 • Elevated CK, +Anti-Jo, +Anti-Mi2
Dermatomyositis
Anti-retrovirals, Gemcitabine Lupus ... uncommon 5-15% of lupus ... Myopathies #myopathy #differential ... #diagnosis #comparison ... #rheumatology
Paraproteinemias

Entities That Can Feature A Monoclonal Protein/M Component:
• MM
• WM
• MGUS
• MGCS
• MGRS
• Splenic Marginal Zone
histiocytosis, and ... to cold IgG • Lupus ... Paraproteinemias #Hematology ... #Monoclonal #Differential ... #Diagnosis #Oncology
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
Diagnosis and Workup ... cases: INR/PT, aPTT ... function test, ANA ... anti-phospholipid antibodies ... #Workup #hematology
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
permanent alopecia Differential ... Diagnosis: • ANCA-associated ... Non-autoimmune rheumatologic ... Erythematosus #Diagnosis ... #Rheumatology