2158 results
Adult-Onset Still's Disease (AOSD)
Rare inflammatory disorder of unknown etiology, difficult to diagnose because of heterogenous presentation.
Adult-Onset Still's Disease ... CRP, AST+ALT, ferritin ... AOSD: F>M, low ferritin ... AdultOnset #Stills #Disease ... #AOSD #rheumatology
Adult Onset Still's Disease
Systemic inflammation with urticarial rash.
Rash: 
 • Nonpruritic, evanescent (correlates with time of
Onset Still's Disease ... • ↓Hgb • High ferritin ... the higher the ferritin ... onset #Stills #disease ... AOSD #diagnosis #rheumatology
Hemophagocytic Lymphohistiocytosis (HLH)
Pathophysiology: Triggering factor (infection,...)→Activation of CD8 T cells (IFN-y) → Excessive activation of macrophages
dysfunction, ↑ Ferritin ... • Autoimmune diseases ... Adult-onset Still disease ... treatment #summary #rheumatology
Macrophage Activation Syndrome (MAS)
Classified among the secondary or acquired forms of haemophagocytic lymphohistiocytosis (sHLH)

What?
A subset of
highly inflammatory disease ... Adult-onset Still disease ... of underlying disease ... dehydrogenase • ↑ Ferritin ... #Rheumatology
Diagnostic Schema for Hyperferritinemia

Pearl: Diseases associated with extreme elevations: 
1. HLH 
2. Still's disease 
3. Systemic
Hyperferritinemia Pearl: Diseases ... Still's disease ... histoplasmosis #Ferritin ... Differential #Diagnosis #Hematology
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
Rheumatology Workup ... Studies in Rheumatic Diseases ... TSH level, serum ferritin ... #Rheumatic #Disease ... diagnosis #testing #Rheumatology
ANTI-MDA5 DERMATOMYOSITIS

Cutaneous manifestations:
• Periorbital heliotrope (blue-purple) rash with edema
• Erythematous rash on the face, or the
Ferritin levels ... severity of the disease ... Dermatomyositis #rheumatology
Iron Panel Interpretation

Iron deficiency - ↓ Iron, ↑-nl Transferrin / TIBC, ↓ Transferrin Saturation,  ↓
Saturation, ↓ Ferritin ... Saturation, ↑-nl Ferritin ... Saturation, ↓-↑-nl Ferritin ... Saturation, ↑-nl Ferritin ... #differential #hematology
Iron Deficiency Anemia - Differential Diagnosis Algorithm

Labs: Ferritin, iron, transferrin, TIBC, TSAT, sTfR

 • Blood loss:
Algorithm Labs: Ferritin ... Structural: Celiac disease ... Diagnosis #Algorithm #ferritin ... #hematology
Causes of Anemia with Low Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Decreased Heme Synthesis or
Globin Synthesis Ferritin ... Dietary Deficiency) Ferritin ... Inflammation Ferritin ... Algorithm #Causes #Hematology