USMLE Heme Onc Flashcards
Acute leukemia
Thrombocytopenia
AL amyloidosis dx
In patients with suspected AL amyloidosis, the combination of bone marrow biopsy and abdominal fat pad aspiration has a sensitivity of approximately 90%.
classic features of AL amyloidosis, including macroglossia, hepatomegaly, nephrotic syndrome, peripheral neuropathy, and the presence of an IgG lambda M-protein
Acute Lymphocytic Leukemia
Prognostic factors:
- Age — the young fare better (< 30)
- Blast count > 30,000 do poorly
- Cytogenetics — hyperdiploidy is a good finding, whereas a Philadelphia chromosome t(9,22) is a poor prognostic finding
Acute Lymphocytic Leukemia
Tx
- Supportive care with transfusions
- Leukophoresis is not usually necessary since the blasts are smaller and less likely to cause sludging
- Combination chemotherapy
- Induction chemotherapy using multi-drug regimens
- Consolidation chemotherapy with multi-drug regimens for multiple cycles
- Maintenance (different from Myeloid)
- CNS prophylasxis intrathecal / radiation
Alpha Thalassemia
- aaa- -a-a- -a— —
- (Hgb H) (Hgb Barts)
- Should have a low MCV
- Should have an elevated reticulocyte count if anemic
- Normal electrophoresis
- Diagnosis can be made by a chain gene analysis
AML M3
- Cytogenetics = t(15,17)
- Tx:
**_AML /// M3 /// DIC _ **
- Translocation involving the retinoic acid receptor gene
- Good prognosis category
- Prominent Auer rods
- Commonly associated with DIC
- Tx: All Trans Retinoic Acid (ATRA) + chemotherapy with at least an anthracycline
AML Treatment
- Induction
- Consolidation Chemo
- Supportive care with transfusions
- Leukophoresis if blast count > 100,000 or for symptoms of hyperviscosity
- Combination chemotherapy
- Bone marrow transplant
- Induction chemotherapy — designed to take a patient to aplasia with recovery of “normal” hematopoiesis and a remission state
- Consolidation chemotherapy — designed to reinforce the remission obtained; usually multiple cycles given
Anal cancer treatment?
- Anal cancer is treated initially with combined radiation therapy and chemotherapy.
- Mitomycin plus 5-fluorouracil is the standard chemotherapy regimen used in conjunction with radiation therapy in the treatment of anal cancer.
Anemia Of Inflamation
- Iron Low
- TIBC Low
- % sat Low/Normal
- Ferritin High ( > 100)
Usually normochromic normocytic RBCs - Decreased reticulocyte count
Gold standard - Bone Bx
Anemia Of Inflamation Tx
Exogenous erythropoietin • Transfusion support • Optimize associated medical illness
Antiphospholipid antibody
PT / PTT effect
PTT prolonged
Antiphospholipid Antibody Syndrome
• Prolonged PTT (kinda odd eventhough its a hypercoagulable dz)
- Treatment options
- Anticoagulation
- Warfarin
- Heparin/LMWH
- ASA
- Anticoagulation
Antithrombin III Deficiency
Tx:
- It Inactivates activated IX, X, XI, XII
- Should always measure p_rior to the institution of heparin therapy but may be decreased secondary to thrombosis_
- Tx: Heparin (resistant) / Warfarin long term / AT III recombinant for surgery
(activated Protein C)
APC Resistance
Tx:
- Mutation in Factor V, resulting in resistance to activated protein C
- Most common inherited hypercoagulable defect
- Found in up to 25% of patients with recurrent thrombosis
- Additive to other risk factors (OCRs, pregnancy,other defects)
- Tx: Warfarin / hparin / LMWH
Aplastic Anemia / causes
- Drugs
- Sulfa drugs
- Chloramphenicol
- Radiation
- Benzenes
- Gold
- PNH
- Viral infection
DX with bone marrow
Aplastic Anemia Tx:
Immunosuppression with ATG [Anti-thymocyte globulin] /cyclosporine
- Older patients
- Younger patients with no marrow donor
Bone marrow transplant
- Younger patients with a donor
Treat a postmenopausal patient with newly diagnosed breast cancer with well-differentiated, estrogen receptor-positive/progesterone receptor-positive, HER2-negative breast cancer.
Aromatase inhibitors are the standard of care for postmenopausal women with these tumors.
Postmenopausal women with hormone receptor–positive breast cancer should take a 5-year course of an aromatase inhibitor as primary treatment or for an additional** 5 years after completing a **5-year course of tamoxifen therapy. In women who are initially treated with tamoxifen, an aromatase inhibitor may be started following 2 to 3 years of tamoxifen therapy to complete a total of 5 years of hormonal therapy.
Trastuzumab is indicated for tumors that overexpress HER2
Asymptomatic follicular lymphoma
Regardless of the stage at presentation, patients with asymptomatic follicular lymphoma can be followed without therapeutic intervention until they experience symptoms.

Auer Cells / AML
Autoimmune Hemolytic Anemia
- Macrocytic due to hight retic count / higher LDH / Higher Bilirubin indirect
- Direct Coombs Test
- Demonstrates antibody on the RBC surface / Mix patient’s blood with anti-IgG or C3 antibodies
- Indirect Coombs
- Test Demonstrates antibody in the serum
- Autoimmune hemolytic anemia
- Glucose 6 phosphate dehydrogenase def
- paroxysmal nocturnal hemoglobinuria
- Pyruvate kinase def
- Microagiopathic hemolytic anemia
AIHA - warm antibody / spherocytes and direct coombs test
PNH: Associated with pancytopenia, hemolytic anemia and thrombosis
PK def: differs from G6PD def in that erythrocytes from PK patients are not subject to hemolysis following oxidative stress and no characteristic morphologic red cell abnormalities on peripheral smear.
Microangiopathic HA have schistocytes on peripheral blood smear and low plt
G6PD def:
B12/Folate Deficiencies
- Macrocytic
- Elevated RDW
- Decreased WBC and platelet counts
- Hypersegmentation
- Decreased reticulocyte count
- *MMA** level is high in B12 Def
- *Homocysteine** is High in both
Best strategy to prevent further CVS complications in SCD
Chronic simple transfusion therapy has been shown to be more effective then hydroxyurea
Beta Thalassemia
- Decreased production of the 3 globin chain
- Should have a low MCV
- Should have an elevated reticulocyte count
- Should see elevated levels of Hgb A2 on hemoglobin electrophoresis







