41 results
Classification of Vasculitis 
Vasculitis of large vessels 
 - Arteritis temporalis (giant-cell arteritis) 
 - Takayasu
central nervous system ... - systemic ... lupus erythematosus ... - purpura-arthralgia-nephritis ... Vessels #Diagnosis #Rheumatology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... - Hemolytic anemia ... Kasabach-Merritt syndrome ... #Differential # ... Diagnosis #hematology
Clinical Features of Systemic Lupus (SLE)
General: Fever (50%), Depression, Fatigue (75%), Weight loss (50%)
Eye: Sjögrens (15%)
Skin
Clinical Features ... of Systemic Lupus ... Butterfly rash, Vasculitis ... , Purpura, Urticaria ... ) Blood (75%): Anemia
Pancytopenia - Differential Diagnosis

Congenital Diseases:
• GATA2 deficiency
• Fanconi’s anemia
• Wiskott-Aldrich syndrome
• Ribosomopathy or telomeropathy

Cancer:
• Leukemia
• Lymphoma

Inflammatory
Congenital Diseases ... deficiency • Fanconi’s anemia ... Wiskott-Aldrich syndrome ... : • Systemic lupus ... #Diagnosis #Hematology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
- Differential ... inflammation Others: • Lupus ... Differential ... lupus erythematosus ... #rheumatology #
BEE Syndromes - Immune-mediated conditions affecting the brain, eye, and ear

Visual or auditory symptoms in conjunction
central nervous system ... • Systemic lupus ... ANCA-associated vasculitides ... #neurology #inflammatory ... #differential #
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Palpable purpura ... Antiphospholipid-antibody syndrome ... • Vasculitis ... lesions • Discoid lupus ... #skin #rashes #differential
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
symptomatology Differential ... Immune Complex: Systemic ... lupus erythematosus ... #differential # ... diagnosis #nephrology
Paraproteinemias

Entities That Can Feature A Monoclonal Protein/M Component:
• MM
• WM
• MGUS
• MGCS
• MGRS
• Splenic Marginal Zone
et diutinum Neurologic ... (-) hemolytic anemia ... to cold IgG • Lupus ... Paraproteinemias #Hematology ... #Diagnosis #Oncology
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
thrombocytopenic purpura ... usually IgG) (e.g. lupus ... Extravascular #Causes #differential ... #diagnosis #hematology ... #anemia