15 results
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
Immunodeficiency (CVID ... CVID: Immunodeficiency ... Granulomatous lymphocytic ... DDX - Other causes ... hypogammaglobulinemia #immunology #hematology
Cold Urticaria
Prevalence - 0.05% in the population
Disease onset - Mostly 2nd to 4th decades of life
Causes
the population Disease ... decades of life Causes ... fever, fatigue, Nausea ... infiltration (lymphocytes ... Urticaria #diagnosis #rheumatology
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
PT, aPTT(liver disease ... IgA, IgG, IgM (CVID ... bypass), LFT (liver disease ... patients if the cause ... #Workup #hematology
Leukemias Overview: ALL, CML, AML, APML, CLL

Acute leukemias > 20% blasts in the peripheral blood smear
Leukemia): • Lymphocytes ... extramedullary disease ... -> AML: Blast crises ... CLL (Chronic Lymphocytic ... #Leukemia #Hematology
Causes of Bone/Joint Pain in Sickle Cell Disease
Vaso-occlusive pain:
 • Mechanism: ischemic pain
 • Can present
Causes of Bone/Joint ... in Sickle Cell Disease ... predispose to other orthopedic ... Pain #SickleCell #Disease ... #hematology
Venous Thrombosis vs Arterial Thrombosis - Differential Diagnosis Framework

VENOUS THROMBOSIS

 • Acquired Risk Factors:
	- >48 hours
Myeloproliferative disease ... Liver, IBD • COVID ... coagulation and other causes ... fulminans - COVID ... pathophysiology #hematology
Cryofibrinogenemia Summary

Cryofibrinogenemia Epidemiology:
 • 40-70 years with a modest female predominance

Cryofibrinogenemia:
 • The precipitation of a
with autoimmune diseases ... 2019 (COVID-19) ... cryoglobulins • Negative causes ... Cryofibrinogenemia #diagnosis #rheumatology ... #hematology
Sjogren's Syndrome Overview

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

Autoimmune exocrinopathy multisystemic disease
glands: • Focal lymphocytic ... Hypocomplementemia • Can cause ... Xerostomia • Dental caries ... UIP, NSIP): • Lymphocytic ... Sjogrens #Syndrome #Rheumatology
Hodgkin's Lymphoma Overview

Hodgkin's lymphoma (HL) is an uncommon hematological malignancy arising from mature B cells. It
HL (MCHL) - Lymphocyte ... HL (LRHL) - Lymphocyte ... LDHL) - Nodular lymphocyte ... number of sites of disease ... classification #hematology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
atherosclerotic disease ... most important diseases ... elevated protein, lymphocytic ... tract, and often causes ... Differential #Diagnosis #Rheumatology