Hematology Flashcards
What is the kids leukemia?
ALL
What is the median age of onset of AML?
60
What are the most common pathogens in patients with leukemia induced neutropenia?
Gram-negatives and fungi
Young patient with lymphadenopathy, hepatosplenomegaly and chronic fatigue, what do you suspect?
ALL
What type of blood dyscrasia causes Auer rods to be seen in the cell cytoplasm?
AML
What is the definitive diagnostic finding for ALL?
terminal deoxynucleotidyl transferase
What additional treatment is commonly needed in acute leukemia to combat a side effect of chemotherapy?
Allopurinol and diuretics d/t increased uric acid blood levels
What are the greatest indicators of prognosis for the acute leukemias?
WBC count and age at diagnosis
What are the cure rates for ALL and AML with current therapies?
> 50% with ALL, > 70% at < 60 years with AML
Which leukemia is a malignancy of the B lymphocytes?
CLL
What is the most prevalent leukemia?
CLL
What are the typical characteristics of a CLL patient?
median age 65, twice as common in men as women
50 yo F presents with episodes of excessive sweating, low-grade fevers, anorexia, weight loss and chronic fatigue. Which leukemia do you suspect?
CML
What are the three phases of CML?
chronic, accelerated and blast crisis - you need to catch it before stage 3 for prognosis
Which leukemia has a mild course but is resistant to cure? Average survival?
CLL - median survival 6 years or 10-15 with stage 0-1
Which blood dyscrasia should be suspected with isolated lymphocytosis and leukocytosis greater than 20k?
CLL
Which blood dyscrasia should be suspected with keukocytosis with median WBC count of 150k?
CML
What is the new test that has replaced the test for the philadelphia chromosome?
BCR-ABL
Which blood dyscrasia shows smudge cells on peripheral smear?
CLL
What is the standard therapy of choice in CML?
imatinib mexylate (gleevee) then likely bone marrow transplant
Pt presents with fatigue, anemia, elevated corrected reticulocyte count, elevated indirect bilirubin and LDH. What work up is needed?
work up for hemolysis
What is the typical cause of sideroblastic anemia?
lead toxicity
What is the work up for microcytic anemia?
Lead levels, TIBC and FeSat, hemoglobin electrophoresis for Hgb A2 and F will be abnormal in thalassemia
What should you think of if Burr cells are seen on smear? (4)
Peptic ulcer, cancer of stomach, Uremia, Vitamin K deficiency
What should you think of if Spur cells are seen on smear (1)?
post splenectomy
What should you think of if stomatocytes are seen on smear (1)?
alcoholic liver disease
What should you think of if shistocytes (helmet cells) are seen on smear?
TTP, DIC, glomerulonephritis, heart valve, burns
If you see bite cells on smear, what should you think?
G6PD deficiency
If you see basophilic stippling on smear, what should you think?
lead toxicity
If you see rouleaux on smear, what should you think?
multiple myeloma
If you have a patient with microcytic anemia who is not responding to iron treatment, what is the most likely alternative diagnosis?
thalassemia
Patient with alpha thalassemia who has been symptomatic should receive what advice about how to stave off symptoms?
folic acid supplementation and avoid oxidative medications (quins, sulfonimides, nitro, dapsone)
What is the treatment for beta thalassemia?
Bone marrow transplant possible splenectomy
Patient presents with chronic fatigue, brittle nails, cheilosis, smooth tongue and esophageal webs. diagnosis?
iron deficiency anemia
Patient with serum iron < 30, elevated TIBC and transferrin sat < 15 has what?
iron deficiency anemia
What additional supplement may increase iron absorption?
Vitamin C
What does prussian blue staining of bone marrow test for?
sideroblastic anemia
What type of anemia is anemia of chronic inflammatory disease?
typically (70%) normochromic normocytic, 30% hypochromic microcytic
What conditions cause pancytopenia?
aplastic anemia, leukemia and myelofibrosis
What is the most common cause of vitamin B12 deficiency?
Pernicious anemia (lack of intrinsic factor to absorb)
Hypersegmented neutrophils on smear of anemic patient. diagnosis?
Vitamin B12 deficiency
A patient with anemia is found to have an elevated indirect bilirubin, elevated LDH on labs. What is the cause?
hemolysis
What does a direct Coombs test identify?
antibodies to the RBCs
What does an indirect Coombs test identify?
antibodies in the patient’s serum
Howell-jolly bodies are seen on peripheral smear, diagnosis?
sickle cell anemia
What is the treatment of an acute pain episode of sickle cell disease?
analgesics, hypotonic fluids and rest
what prophylaxis is indicated for sickle cell patients (6)?
low-dose PCN daily until age 6, pneumococcal vaccine, transcranial dopplers for stroke prevention, pulmonary function testing for restrictive disease screening, folate supplementation, hydroxyurea orally to increase Hgb F production
Young male african american patient presents with acute fatigue after taking aspirin. His h/h is low and indirect bilirubin high. Smear reveals bite cells and Heinz bodies. What should you test to confirm the diagnosis? Treatment?
G6PD level should be low, tell patient to avoid oxidative drugs (like aspirin) and fava beans
What are the causes of an IgG positive direct Coombs test? (4)
lymphoma, SLE, UC drugs, transfusion reaction
What are the causes of an IgM positive direct Coombs test? (3)
Viral infections, antibiotics, transfusion reactions
What conditions are patients with polycythenia vera at risk for?
CML or AML
Patient presents with generalized pruritus after bathing, what is the diagnosis? diagnostic criteria?
polycythenia vera, hematocrig >54 in males, > 51 in females
what is the most common cause of morbidity and mortality in patients with polycythenia vera?
thrombosis
A patient with painless supraclavicular and cervical lymphadenopathy until injestion of alcohol has Reed-Sternberg cells on biopsy. Diagnosis?
Hodgkins lymphoma
Patient presents with painless lymphadenopathy and abdominal fullness as well as vague GI symptoms. Likely cancer type?
Burkett’s lymphoma
Which lymphoma has a better cure rate?
Hodgkin’s
Patient has Bence Jones proteinuria. diagnosis?
Multiple myeloma
Patient has a monoclonal spike on serum protein electrophoresis. diagnosis?
Multiple myeloma
Female patient with severe anemia inducing menses, first hematologic test?
vWF
Treatment of acute bleeding for someone with vWF deficiency?
DDAVP, factor VIII
a 5 yo boy presents with hemarthrosis, his mother’s brother had bleeding problems as well. PTT is prolonged. Next test to confirm dx? dx? tx?
factor VIII for deficiency, Hemophilia A, treat with factor VIII recombinant
What is another name for Christmas disease?
Hemophilia B
A post operative patient who is NPO and receiving post operative antibiotics begins to have soft tissue bleeding. PT/PTT are mildly prolonged. LFTs are elevated. Clotting factors II, VII, IX and X are decreased. What is the cause? Treatment?
Vitamin K deficiency, downgrade antibiotics if possible, supplement vitamin K