51 results
Causes of Thrombocytosis - Differential Diagnosis Algorithm
Spurious:
 • Artifact (redo CBC)
Autonomous:
 • Essential thrombocytosis
 • Polycythemia
Causes of Thrombocytosis ... Artifact (redo CBC ... Myelofibrosis Infectious ... Diagnosis #Algorithm #Causes ... #Hematology
Chronic Lymphocytic Leukemia - Summary

Cancer affecting lymphocytes/Mature B cell neoplasm
 • Lymphocytes accumulate in large numbers
weeks without infection ... Lymphocytosis on CBC ... surface molecules: CD5 ... • Richter’s Syndrome ... workup #oncology #hematology
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Causes of Culture ... antibiotics as a cause ... Dracunculiasis - Non-Infectious ... SAPHO, Sweet's Syndrome ... Differential #Diagnosis #InfectiousDiseases
Causes of Diffuse Lymphadenopathy - Differential Diagnosis Algorithm
Reactive:
 - Systemic Inflammatory
     •
Causes of Diffuse ... Pseudotumor - Infectious ... History of Bleeding, Infection ... Lymphocytic Leukemia (CBC ... #Hematology #Oncology
Leukemias Overview: ALL, CML, AML, APML, CLL

Acute leukemias > 20% blasts in the peripheral blood smear
Malaise, bleeding, infections ... -> AML: Blast crises ... develop leukostasis syndrome ... • Tumor lysis syndrome ... #Leukemia #Hematology
Hemophagocytic Lymphohistiocytosis (HLH)
Pathophysiology: Triggering factor (infection,...)→Activation of CD8 T cells (IFN-y) → Excessive activation of macrophages
→Activation of CD8 ... salmonella, ...), Parasites ... lymphoma, B-cell ... Drugs, Unknown cause ... treatment #summary #rheumatology
CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
-cell count is less ... present in 15% of cases ... -cell count more ... Demyelinating disease caused ... opportunistic #InfectiousDiseases
Causes of Splenomegaly - Differential Diagnosis Algorithm
Infectious
 • Bacterial
 • Viral (EBV)
 • Parasitic
 • Fungal
Congestive
Causes of Splenomegaly ... Diagnosis Algorithm Infectious ... Viral (EBV) • Parasitic ... Disease • Sickle Cell ... #Hematology
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
Causes of Thrombocytopenia ... ITP • SLE • CLL ... Non-lmmune: • HELLP Syndrome ... Vasculitis • Infection ... #Hematology
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
Toxoplasmosis (CD4 ... Diagnosis- Compatible syndrome ... CNS Lymphoma (CD4 ... • Nocardia • Parasitic ... differential #diagnosis #causes