13 results
Autoimmune Hemolytic Anemia (AIHA) - Differential Diagnosis Table

Warm AIHA (48-70%)
Cold AHA (16-32%)
 • Donath-Landsteiner HA (paroxysmal
Autoimmune Hemolytic Anemia ... (AIHA) - Differential ... AIHA (7-8%) DAT-negative ... #AIHA #Differential ... Diagnosis #Table #hematology
Capnocytophaga Canimorsus Skin Rash

40 M presents w/ N, V, severe epigastric pain. SHx: smoker, drinks 18
Bandemia, AKI. ... fastidious gram-negative ... Myocarditis & culture-negative ... or clindamycin Antibiotic ... #dermatology #clinical
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Microangiopathic hemolytic anemia ... Drugs (Beta lactam antibiotics ... Extravascular #Causes #differential ... #diagnosis #hematology ... #anemia
Causes of Isolated Neutropenia - Differential Diagnosis Algorithm
Congenital
Medications
 • Anticonvulsants
 • Antibiotics
 • Antithyroid
 • Antihypertensive
Neutropenia - Differential ... Anticonvulsants • Antibiotics ... Bacteria • Gram Negative ... #Neutropenia #Differential ... Algorithm #Causes #Hematology
Bandemia Overview

Normal: < 1%
Clinically significant: > 10%

Band neutrophils are slightly less mature than segmented neutrophils and
Neutrophil (Normal) Differential ... likelihood of negative ... indicator of infection relative ... #differential # ... neutrophil #WBC #CBC #hematology
CNS Infections - Viral Encephalitis and Bacterial Meningitis - Differential Diagnosis Framework

Viral Encephalitis:
MCC: Enteroviruses (e.g., coxsackievirus
Maculopapular rash ... in 70%-85% • Negative ... stain: Previous antibiotics ... Monocytogenes or gram negative ... • Uveitis • Rash
Cold Agglutinin Disease

3 Types of Cold Sensitive Antibodies:
  1. Cold Agglutinins (CAD)
  2. Donath-Landsteiner
• Symptoms of anemia ... • hemolytic anemia ... for anti-C3d and negative ... younger pts) Differential ... #hematology #diagnosis
TTP - Laboratory Evaluation for Thrombotic Thrombocytopenic Purpura

Activity of von Willebrand factor-cleaving protease activity - A
result in severe anemia ... antiglobulin tests - Negative ... immune hemolytic anemia ... WBC count and differential ... Diagnosis #Workup #Hematology
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
Rash is usually ... Fever + facial rash ... PrathitKulkarni #Erythemas #comparison ... #table #differential ... #diagnosis #dermatology
Myelodysplastic Syndromes (MDS)

What?
Myelodysplastic syndromes are a group of disorders caused by blood cells that are poorly
blood cell count (anemia ... • Aplastic Anemia ... isoniazid) • Antibiotics ... blood count with differential ... Syndromes #diagnosis #hematology