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

What?
A subset of
A subset of hemophagocytic ... disease • Periodic fever ... syndromes Clinical ... multiorgan failure • Fever ... - Nonremitting fever
Fever vs Hyperthermia
Fever:
 • Regulated in the hypothalamic thermoregulatory center
 • "Set point" raised by prostaglandin
Fever vs Hyperthermia ... Fever: • Regulated ... ; Serotonin syndrome ... BrighamChiefs #Fever ... #Hyperthermia #comparison
Hemophagocytic Lymphohistiocytosis (HLH)
Definition: Overwhelming clinical syndrome associated with excessive macrophage activation and cytokine storm due to
Hemophagocytic Lymphohistiocytosis ... : Overwhelming clinical ... syndrome associated ... following: • Fever ... #hematology
Hemophagocytic Lymphohistiocytosis (HLH)
Pathophysiology: Triggering factor (infection,...)→Activation of CD8 T cells (IFN-y) → Excessive activation of macrophages
Hemophagocytic Lymphohistiocytosis ... accumulation of clinical ... : fever +++, hepatosplenomegaly ... , ↓ Fibrinogen level ... Treatment: •
Thrombocytopenia and Pregnancy - TTP/HUS, HELLP Syndrome and Acute Fatty Liver of Pregnancy (AFLP)
Three syndromes in
TTP/HUS, HELLP Syndrome ... child * Severe cases ... AFLP #obstetrics #hematology ... #diagnosis #table ... #comparison
TRALI vs TACO - Transfusion Reactions
TRALI:
 • Epidemiology: 0.1% of transfused patientsl
 • Risk factors: Critical
without other cause ... explain symptoms • Fever ... pulmonary edema) • Fever ... #diagnosis #comparison ... #table
Kerion
Raised, boggy lesion with heaped up purulent nodules 
Caused by host's response to a fungal ringworm
purulent nodules Caused ... mentagrophytes) Clinical ... Hair loss • Fever ... Lymphadenopathy Treatment ... Griseofulvin #Kerion #Dermatology
Borrelia recurrentis on Peripheral Blood Smear
23M Somali refugee recently arrived w/severe abd pain, confusion and fever
confusion and fever ... Syndrome: 3d of ... fever approx. 7d ... Fever recurs over ... microscopy #pathology #clinical
Thrombocytopenia and Pregnancy
Three syndromes in the critically ill pregnant woman who presents with coagulation defects.
1) HELLP
Pregnancy Three syndromes ... child * Severe cases ... Obstetrics #OBGyn #Hematology ... #Diagnosis #Comparison ... #Table
Sweet Syndrome

Acute febrile neutrophilic dermatosis (Sweets Syndrome) is a skin condition characterized by fever and inflamed
characterized by fever ... Disorder: - Fever ... Symptoms: - Fever ... arthralgia) - Fever ... Causes: - Idiopathic