11 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
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
Idiopathic CD4 Lymphopenia (ICL) / Lymphocytopenia 

DIAGNOSTIC CRITERIA FOR ICL
 • Persistent CD4 T-cell lymphopenia
 •
occasions COMMON ASSOCIATIONS ... Autoimmune (Sjogren ... , SLE, Kikuchi dz ... #hematology #Differential ... #Causes #lymphocytopenia
Thrombotic Microangiopathy - TMAs
1. Not all MAHAs are due to TMAs but (almost) all TMAs cause
almost) all TMAs cause ... triad of MAHA + thrombocytopenia ... . 5. 2nd TMA- autoimmune ... Microangiopathy #TMAs #hematology ... #diagnosis #ttp
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
• They can cause ... Cryoglobulins Cause ... Labs/Diagnosis: ... • Low serum C4 ... classification #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 ... /aggregate) of CD4 ... and peripheral Thyroid ... phenomenon (16%) MSK ... #Rheumatology #
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
Hemophagocytic Lymphohistiocytosis (HLH)
Pathophysiology: Triggering factor (infection,...)→Activation of CD8 T cells (IFN-y) → Excessive activation of macrophages
Lymphohistiocytosis (HLH) Pathophysiology ... →Activation of CD8 ... solid cancers • Autoimmune ... diseases: SLE++ ... treatment #summary #rheumatology
Leukemias Overview: ALL, CML, AML, APML, CLL

Acute leukemias > 20% blasts in the peripheral blood smear
ALL: mediastinal mass ... infiltrates (anemia, thrombocytopenia ... • Tumor lysis syndrome ... #Leukemia #Hematology ... #Oncology #Diagnosis
TAFRO

TAFRO syndrome was first described in 2010, standing for:
- Thrombocytopenia
- Anasarca
- Fever
- Reticulin fibrosis
- Organomegaly

TAFRO syndrome
mesothelioma, etc - Autoimmune ... erythematosus (SLE ... cell lymphoma Pathophysiology ... Histopathological Diagnoses ... #management #rheumatology