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

What?
A subset of
Macrophage Activation Syndrome ... Periodic fever syndromes ... hypersensitivity syndromes ... with leukopenia, anemia ... Macrophage #Activation #Syndrome
Algorithm for the Evaluation of Chronic Diarrhea (< 7 days)
Exclude:
1. Causes of acute diarrhea
2. Lactose intolerance
3.
Irritable bowel syndrome ... Systemic disease ... Malabsorption syndromes ... Irritable bowel syndrome ... #diagnosis #differential
Hypocalcemia Workup - Differential Diagnosis Algorithm
 • Low Magnesium, High Magnesium - Functional Hypoparathyroidism
 • High
Hypocalcemia Workup ... - Differential ... Calcium Chelators, Lactate ... Pancreatitis, Sepsis ... metastases, Hungry bone syndrome
Lactic Acidosis - Differential Diagnosis Framework

Type A: Impaired O2 Delivery (DO2)
 • Decreased O2 Delivery: Hypotension
Shock, Severe Anemia ... Ischemia, Compartment Syndrome ... Beta-Agonists, ↑ work ... Impaired Clearance: Systemic ... in Short Bowel Syndrome
Clinical Features of Systemic Lupus (SLE)
General: Fever (50%), Depression, Fatigue (75%), Weight loss (50%)
Eye: Sjögrens (15%)
Skin
Clinical Features ... Joints (90%): Aseptic ... Demyelinating syndromes ... ) Blood (75%): Anemia ... symptoms #diagnosis #rheumatology
Pancytopenia - Workup and Differential Diagnosis Algorithm
Consumption Disorders
 1. Autoimmune Mediated Pancytopenia
 2. Splenic Sequestration
Peripheral Destruction
Pancytopenia - Workup ... and Differential ... HLH syndrome 5. ... Acquired Aplastic Anemia ... marrow failure syndrome
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 ... Wiskott-Aldrich syndrome ... Autoimmune Diseases: • Systemic ... #Diagnosis #Hematology
Pancytopenia - Workup and Differential Diagnosis Algorithm
Consumption Disorders
 1. Autoimmune Mediated Pancytopenia
 2. Splenic Sequestration
Peripheral Destruction
Pancytopenia - Workup ... and Differential ... HLH syndrome 5 ... Acquired Aplastic Anemia ... marrow failure syndrome
Hemolysis - Differential Diagnosis Framework

1) Environment
  - Fragmentation
  - MAHA: TTP, HUS, DIC, HELLP
Hemolysis - Differential ... Drug-associated, PCH, Evans Syndrome ... Defects: Sickle cell anemia ... Haptoglobin ↓ - Lactate ... #Diagnosis #hematology
Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
Platelet Count - Differential ... for workup, including ... hemolysis, deficiency anemia ... Kawasaki, Nephrotic syndrome ... Thrombocytosis #Platelets #Differential