23 results
Erythema Nodosum: In this case, E. Nodosum has occured secondary to 
Streptococcal infection.
Photo credit, Josh Fierer,
Nodosum has occured secondary ... Streptococcal infection ... Catalog of Clinical ... Images #Clinical ... #Dermatology #SkinRash
Herpes Zoster: Herpes virus mediated infection that occurred in this patient receiving chemotherapy 
for an underlying
Zoster: Herpes virus ... mediated infection ... Catalog of Clinical ... Images #Clinical ... #Photo #Dermatology
Pancytopenia - Differential Diagnosis

Congenital Diseases:
• GATA2 deficiency
• Fanconi’s anemia
• Wiskott-Aldrich syndrome
• Ribosomopathy or telomeropathy

Cancer:
• Leukemia
• Lymphoma

Inflammatory
Pancytopenia - Differential ... deficiency • Fanconi’s anemia ... deficiency Infections ... • Epstein-Barr virus ... #Diagnosis #Hematology
Causes of Anemia by Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Low Mean Corpuscular Volume (<80
Volume (MCV) - Differential ... Inflammation, Chronic Infection ... #MCV #Classification ... #Differential # ... Algorithm #Causes #Hematology
Causes of Thrombocytosis - Differential Diagnosis
Secondary Thrombocytosis (a.k.a Reactive Thrombocytosis):
 • Acute infection
 • Solid organ
Diagnosis Secondary ... Thrombocytosis): • Acute infection ... malignancies • Anemia ... Diagnosis #Causes #hematology ... #secondary
Necrotizing Fasciitis: African-American patient with diabetes that predisposed him to rapidly 
progressive infection. Lower extremity is
progressive infection ... less apparent secondary ... As the infection ... Images #Clinical ... #Photo #Dermatology
Differential Diagnosis for Hemolytic Anemia
Intrinsic Causes:
 • Enzyme deficiencies ex. G6PD, pyruvate kinase 
 • Hemoglobinopathies
Differential Diagnosis ... for Hemolytic Anemia ... drug induced • Infections ... Diagnosis #causes #classification ... #hematology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... leakage of RBC's secondary ... - Hemolytic anemia ... #Diagnosis #hematology ... #nonpalpable #dermatology
Genital Lesions - Differential Diagnosis Algorithm
Elevated - Vesicles:
 • Herpes simplex
Elevated - Papules / Plaques -
Genital Lesions - Differential ... Human papilloma virus ... acuminata) • Secondary ... #skinlesions #dermatology ... #Differential #
Cold Agglutinin Disease

3 Types of Cold Sensitive Antibodies:
  1. Cold Agglutinins (CAD)
  2. Donath-Landsteiner
AIHA Primary Secondary ... lymphoproliferative disorder Secondary ... Clinical Presentation ... younger pts) Differential ... #hematology #diagnosis