24 results
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
• Avg age of DX ... Autoimmunity • Chronic ... DDX - Other causes ... Malignancies • Chronic ... hypogammaglobulinemia #immunology #hematology
Causes of Diffuse Lymphadenopathy - Differential Diagnosis Algorithm
Reactive:
 - Systemic Inflammatory
     •
Pseudotumor - Infectious ... History of Bleeding, Infection ... Age > 50 • Chronic ... Reed-Sternberg Cells ... Algorithm #Causes #Hematology
Causes of Neutrophilia - Increased Neutrophils - Differential Diagnosis Algorithm
Infection
 • Bacterial
 • Abscess
 • Viral
Medications
Diagnosis Algorithm Infection ... Myeloproliferative Disorder • Chronic ... pancytopenia, blast cells ... Algorithm #Causes #Hematology
Chronic Lymphocytic Leukemia - Summary

Cancer affecting lymphocytes/Mature B cell neoplasm
 • Lymphocytes accumulate in large numbers
Chronic Lymphocytic ... weeks without infection ... Scoring system: DDX ... Contamination, colitis DDX ... leukemia #CLL #Chronic
Important organisms in Chronic Granulomatous Disease (CGD):
 - Staph aureus
 - Serratia marcescens
 - Burkholderia cepacia
Important organisms in Chronic ... febrilepodcast.com] #CGD #Chronic ... Granulomatous #Disease #infections ... #differential #ddx ... #diagnosis #microbiology
Leukemias Overview: ALL, CML, AML, APML, CLL

Acute leukemias > 20% blasts in the peripheral blood smear
Malaise, bleeding, infections ... pain, bleeding, infections ... bruising, bleeding, infection ... plaques) AML Dx ... #Leukemia #Hematology
Basophilia - Differential Diagnosis Framework

Basophils < 1% of the total white blood cell count
Basophils function similarly
similarly to mast cells ... Disorders: • Chronic ... Diabetes/DKA Infections ... : • helminth infections ... Diagnosis #causes #hematology
Myelodysplastic Syndromes (MDS)

What?
Myelodysplastic syndromes are a group of disorders caused by blood cells that are poorly
petechiae) • Frequent infections ... Macrocytic anemia DDX ... Marrow Failure • Chronic ... • Parvovirus infection ... Syndromes #diagnosis #hematology
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
macrophages and T cells ... • Silicosis • Chronic ... disease • DM DDX ... Langerhans giant cells ... malignancy, and chronic
Aplastic Anemia - Overview

Who?
• M = F
• 3 peaks:	1) Childhood	2) 15-25 years	3) >60 years

What?
• Aplastic anemia
Neutropenia - recurrent infections ... Idiopathic • Infections ... and thymoma DDX ... number of CD34+ cells ... Anemia #oncology #hematology