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

Immune Complex Mediated (granular staining):
pathophysiologic causes ... to Kidney: Anti-GBM ... Glomerulonephritis #Vasculitis ... #differential #diagnosis ... #algorithm #rheumatology
Causes of Fever of Unknown Origin (FUO) - Differential Diagnosis
 • Infection: Extrapulmonary tuberculosis, Abscess, Endocarditis,
- Differential Diagnosis ... Brucellosis, Q fever, EBV ... Malignancy: - Hematologic ... the most common vasculitis ... #Differential #Diagnosis
Hemophagocytic Lymphohistiocytosis (HLH)
Pathophysiology: Triggering factor (infection,...)→Activation of CD8 T cells (IFN-y) → Excessive activation of macrophages
Ferritin >1000 ng ... Infections+++: Virus (EBV ... biologics (CMV +++, EBV ... of emergency, ICU ... #management #treatment
ANA (Antinuclear Antibody) and ANCA (Antineutrophil cytoplasmic antibodies)
 • Systemic lupus erythematosus
   1. Anti-dsDNA
ANCA-Associated Vasculitis ... Renal-limited vasculitis ... + 90% • Anti-GBM ... Antineutrophil #antibodies #diagnosis ... #rheumatology #
Post-Transplantation Lymphoproliferative Disorders (PTLD)
Definition: Lymphoid and/or plasmacytic proliferations that occur as a result of immunosuppression in
symptoms, unexplained hematologic ... extralymphatic tissues Diagnosis ... to 50% of PTLD cases ... Disorders #oncology #diagnosis ... #management #transplant
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
- Differential Diagnosis ... tract, and often causes ... glomerulonephritis) • Anti-GBM ... Differential Diagnosis ... #rheumatology #
Aplastic Anemia - Overview

Who?
• M = F
• 3 peaks:	1) Childhood	2) 15-25 years	3) >60 years

What?
• Aplastic anemia
Toxic injury to BM ... and petechiae Causes ... Parvovirus B19 - EBV ... Anemia #oncology #hematology ... #diagnosis #management
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
Autoimmune ANCA vasculitis ... antibody, Anti-GBM ... usually low in anti-GBM ... Goodpasture's cause ... #management #treatment
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Diagnosis Framework ... Differential Diagnosis ... tract, and often causes ... pain and GN Anti-GBM ... #Rheumatology
Idiopathic CD4 Lymphopenia (ICL) / Lymphocytopenia 

DIAGNOSTIC CRITERIA FOR ICL
 • Persistent CD4 T-cell lymphopenia
 •
Lymphocytopenia DIAGNOSTIC ... CRITERIA FOR ICL ... EBV. CMV. ... #diagnosis #hematology ... #Differential #Causes