9 results
ANA Patterns and Associated Rheumatic Diseases:
 • Homogeneous: Systemic lupus erythematosus (SLE), Mixed connective tissue disease
disease (MCTD), Drug-induced ... Idiopathic Arthritis ... #Antinuclear #Antibodies ... ANA #patterns #rheumatology ... #diagnosis #differential
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Early liver disease ... antiphospholipid antibodies ... Reduced liver synthesis ... #Causes #diagnosis ... #differential #hematology
Antinuclear Antibodies (ANA)
ANA or Anti-NucIear Antibody refers to antibodies against antigens in the nucleus → like
Antinuclear Antibodies ... erythematosus ( ... , Drug-Induced Lupus ... ANA #patterns #rheumatology ... #diagnosis #differential
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
Differential Diagnosis ... PT and the aPTT ... antiphospholipid antibodies ... • Reduced liver ... #differential #hematology
Systemic Lupus Erythematosus - Diagnosis
Manifestations:
 - Arthritis 69%
 - Malar rash 40%
 - Fever 36%
 -
Systemic Lupus Erythematosus ... : - Arthritis ... SLE-Related Auto-Antibodies ... : Drug-induced lupus ... #Erythematosus
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
Differential Diagnosis ... extremities Drug ... 1, SCL-70, RNP antibodies ... • Antihistone: Drug ... #Diagnosis #Rheumatology
Macrophage Activation Syndrome (MAS)
Classified among the secondary or acquired forms of haemophagocytic lymphohistiocytosis (sHLH)

What?
A subset of
) • Sepsis • Drug-induced ... thrombocytopenia • Liver ... Hypofibrinogenemia • ↑ PT ... Activation #Syndrome #Diagnosis ... #Management #Hematology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
inflammation Others: • Lupus ... such as systemic lupus ... erythematosus, ... C-ANCA) pattern: antibodies ... #rheumatology #
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
joint • Systemic lupus ... erythematosus ( ... double-stranded DNA antibodies ... profile, including liver ... (to support a diagnosis