27 results
Macrophage Activation Syndrome (MAS)
Classified among the secondary or acquired forms of haemophagocytic lymphohistiocytosis (sHLH)

What?
A subset of
• Adult-onset Still ... disease • Periodic fever ... multiorgan failure • Fever ... - Nonremitting fever ... #Hematology #Rheumatology
Hemophagocytic Lymphohistiocytosis (HLH)
Definition: Overwhelming clinical syndrome associated with excessive macrophage activation and cytokine storm due to
Overwhelming clinical syndrome ... following: • Fever ... • Bicytopenia Treatment ... Lymphohistiocytosis #diagnosis #management ... #treatment #hematology
Hemophagocytic Lymphohistiocytosis (HLH)
Pathophysiology: Triggering factor (infection,...)→Activation of CD8 T cells (IFN-y) → Excessive activation of macrophages
• Clinical: fever ... , ↓ Fibrinogen level ... +, Adult-onset Still ... Lymphohistiocytosis #diagnosis #management ... #rheumatology
Adult-Onset Still's Disease (AOSD)
Rare inflammatory disorder of unknown etiology, difficult to diagnose because of heterogenous presentation.
Adult-Onset Still's ... : High spiking fever ... Systemic AOSD: high fever ... #diagnosis #management ... #treatment
Adult-Onset Still's Disease
Clinical triad: Fever, Arthralgia/arthritis, Skin rash ± odynophagia
+ Biological inflammation: Increased neutrophils, Hyperferritinemia, decreased
Adult-Onset Still's ... Clinical triad: Fever ... #AdultOnset #Stills ... Disease #diagnosis #management ... #treatment #rheumatology
Adult Onset Still's Disease
Systemic inflammation with urticarial rash.
Rash: 
 • Nonpruritic, evanescent (correlates with time of
correlates with time of fever ... Daily high spiking fever ... - Fever spikes ... Fever of at least ... #management
Leukostasis vs Tumor Lysis Syndrome
Leukostasis:
 • Pathophysiology: Large, immature blasts and high WBC count cause hyperviscosity
, dyspnea, +/- CXR ... - 80% have fever ... organ damage • Treatment ... TLS #diagnosis #management ... #hematology
Hemophagocytic Lymphohistiocytosis (HLH)

High mortality without prompt recognition and management. HLH is a critical diagnostic consideration in
recognition and management ... Characteristics: Persistent fever ... Persistent high fever ... Fever b. ... #Hematology #HemeOnc
Oroya Fever
Hematologic disease caused by Bartonella bacilliformis
Restricted to the Andes highlands of Peru & Ecuador
B. bacilliformis:
Oroya Fever Hematologic ... Inflammation: high fever ... TREATMENT: ​• Acute ... gabrieltalledop #Oroya #Fever ... #diagnosis #management
Hantavirus
Pathogen: Hantavirus - Rodents are the primary reservoir
Transmission:
 • Shed in the urine, feces, saliva of
Cardiopulmonary Syndrome ... • Prodrome: fever ... , chills, myalgias ... • Autopsy PCR Treatment ... Hantavirus #diagnosis #management