20 Approach to a Patient with WBC Disorders, Lymphadenopathy and Splenomegaly Flashcards
May be a benign incidental finding or a presenting sign of an underlying disease
Lymphadenopathy
Clinical approach to patients with lymphadenopathy
History and physical exam
Age
Lymph nodes
Lab investigation
Removal of senescent RBCs
Antibody synthesis
Removal of antibody coated bacteria and antibody coated blood cells
Spleen
Space between the spleen can go to, not where the spleen is normally located
Traube’s space
Common s/s of splenomegaly
Heaviness/LUQ fullness
Early satiety
Form of mucopolyssacharidosis or accumulation of GAGs
Gaucher’s disease
Neoplastic transformation of WBC precursors
Maturation arrest
Uncontrolled proliferation
Evasion of apoptosis
Condensed granules that look like sticks in the cytoplasm
Differentiation of leukemia
Auer rods
Nonspecific signs and symptoms as a consequence of cytopenias
Leukemia
Diagnosis of leukemia
Reads how many of the cells express a particular signature
Flow cytometry
Definitive Ags for AML
Cytoplasmic MPO
Definitive Ags for ALL T-cells
Cytoplasmic CD3
Surface CD3
T cell receptor CD7-bright
Strongly associated Ags with AML
CD117
Strongly associated Ags with ALL-B cell
Cytoplasmic CD79a
Cytoplasmic CD22, CD19, CD-10 bright
Strongly associated Ags with ALL-T cell
CD7 bright
Moderately associated Ags with AML
CD13
CD33
Moderately associated Ags with ALL-B cell
TdT-moderate to bright