13 results
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
Causes of Thrombocytopenia ... methotrexate) • Drugs Autoimmune ... • ITP • SLE ... Non-lmmune: • HELLP Syndrome ... #Hematology
Autoantibodies and their Disease Associations
ANA - Non-specific; common in SLE, autoimmune hepatitis
Anti-CCP, Rheumatoid factor - RA
Anti-dsDNA
their Disease Associations ... , autoimmune hepatitis ... microsomal) - Autoimmune ... #diseases #diagnosis ... #table #rheumatology
Causes of Thrombocytopenia - Differential Diagnosis Framework
Decreased Production:
 - Drugs (chemo, yang, sulfa, acetaminophen, NSAIDs, quinine,
Causes of Thrombocytopenia ... : ITP, HITT - Autoimmune ... : SLE, RA, antiphospholipid ... syndrome - Pregnancy ... #Framework #hematology
Thrombotic Microangiopathy - TMAs
1. Not all MAHAs are due to TMAs but (almost) all TMAs cause
triad of MAHA + thrombocytopenia ... . 5. 2nd TMA- autoimmune ... catastrophic APS, SRC, SLE ... Microangiopathy #TMAs #hematology ... #diagnosis #ttp
Hemolytic Anemia - Differential Diagnosis Algorithm
 • Sickle cells - Consider sickle cell disease (diverse genotypes):
Algorithm • Sickle ... genotypes): SS, SC, SE ... Schistocytes, thrombocytopenia ... elliptocytosis, autoimmune ... #hematology #testing
Antinuclear Antibodies (ANA)
ANA or Anti-NucIear Antibody refers to antibodies against antigens in the nucleus → like
), Sjogren's Syndrome ... Arthritis, Sjögren Syndrome ... Thyroid, Autoimmune ... ANA #patterns #rheumatology ... #diagnosis #differential
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
Differential Diagnosis ... disease • Non-autoimmune ... rheumatologic diseases ... disorders (e.g. thyroid ... #Rheumatology
Macrophage Activation Syndrome (MAS)
Classified among the secondary or acquired forms of haemophagocytic lymphohistiocytosis (sHLH)

What?
A subset of
(MAS) Classified ... erythematosus [SLE ... leukopenia, anemia, and thrombocytopenia ... #Diagnosis #Management ... #Hematology #Rheumatology
Sjogren's Syndrome Overview

Epidemiology:
• F > M: 9:1
• 5-6th Decades (can be any age)

Autoimmune exocrinopathy multisystemic disease
overlaps with RA, SLE ... and peripheral Thyroid ... Nephrogenic DI Hematologic ... phenomenon (16%) MSK ... #Rheumatology #
Idiopathic CD4 Lymphopenia (ICL) / Lymphocytopenia 

DIAGNOSTIC CRITERIA FOR ICL
 • Persistent CD4 T-cell lymphopenia
 •
occasions COMMON ASSOCIATIONS ... W/ LOW CD4 • Autoimmune ... (Sjogren, SLE, ... chemotherapy) • Genetic syndromes ... #hematology #Differential