Hematology TB Flashcards Unit 3 1) The cell line committed to developing into a myeloblast is 2) Cells committed to differentiate as granulocytes are dependent on __(A)__ and __(B)__ to differentiate further. 3) Arrange the cells in granulocytic series into the correct order of maturation. A) Promyelocyte B) Myeloblast C) Metamyelocyte D) Myelocyte E) Band neutrophil F) Segmented polymorphonuclear neutrophil (PMN) 4) What is the length of time that myeloblasts reside in the bone marrow? 5) What is the length of time that promyelocytes reside in the bone marrow? 6) What is the length of time myelocytes spend maturing in the bone marrow? 7) The predominant cell type found in the maturation storage compartment is CFU-GM a. Colony-stimulating factor (CSF) b. Interleukins B, A, D, C, E, F 15 hours 24 hours 4.3 hours Segmented polymorphonuclear neutrophil (PMN) 7) 7–10 days 8) 2.5 days 9) 12 hours 10) No large reserve The marrow reserve contains mature cells with variable life spans. Match the cell type with the expected length of time in the marrow reserve. 8) Polymorphonuclear segmented neutrophils (PMNs) 9) Eosinophils 10) Basophils 11) Monocytes 12) Match the proportion of cells to the concentration in the bone marrow. Myeloblast 1% Myelocyte 3% Promyelocyte 12% 13) Match the relative proportion of leukocytes with the cell type. Metamyelocytes 45% Band neutrophils 35% PMNs 20% 14) Once mature granulocytes migrate to the tissues, their life span is Several days considered to be 15) Eosinophilic granules differ from neutrophilic granules because Lack lysozyme they 16) Monocytes have an estimated half-life in the circulating blood of 8.5 hours 17) Eosinophils have a well-documented daily fluctuation; the quantity At night (when of circulating eosinophils tends to be highest ____. sleeping) 18) The total leukocyte count is highest and is at a peak at ____. Early morning In women, the number of circulating eosinophils __(18)__ at the 18. Drop time of ovulation and __(19)__ at the time of menstruation. 19. Rise 1 Hematology TB Flashcards Unit 3 20) The most frequent cause of a nonmalignant increase in total WBC count is an increase in ____. 21) Eosinophilia is associated with 22) Neutropenia can result from ____ 23) Basophilia can be observed in 24) Significant eosinophilia (20%–70%) can be seen in 25) Monocytosis can be associated with 26) Monocytopenia can be associated with 27) Döhle bodies may be seen in patients with ___. 28) Toxic granulation may A) Represent metabolic toxicity in cells B) Represent precipitation of ribosomal protein (RNA) C) Be most frequently associated with infectious states D) All of the above 29) In May-Hegglin anomaly, patients may demonstrate 30) Patients with Chediak-Higashi syndrome 31) Alder-Reilly inclusions are most commonly seen in patients with 32) True or false? H. capsulatum is a fungus. 33) True or false? H. capsulatum can be recovered from body fluids, e.g., CSF. 34) True or false? H. capsulatum can be observed in phagocytic cells 35) Ehrlichia characteristics include 36) Patients with type I diabetes exhibit a defect in 37) CGD patients demonstrate a defect in 38) The absence of the enzyme myeloperoxidase is not manifested in 39) Qualitative disorders of monocytes-macrophages are manifested as ____ storage diseases. 40) Gaucher disease represents 41) Niemann-Pick disease is an abnormality of ____ metabolism. 42) Transient neutropenia can be caused by 43) True or false? Neutrophils are functionally defective in PelgerHuet anomaly. 44) Pseudohypersegmentation can be seen in 45) Eosinophilia is not a characteristic of a(n) ____ infection. Neutrophils Active allergies (hay fever) Entrapment of PMNs in the spleen Chronic sinusitis Hookworm Infections, e.g., tuberculosis No known conditions Burns and Viral infections D Abnormal bleeding tendencies Demonstrate delayed killing of ingested bacteria by PMNS Hurler syndrome True True True A Gram-negative bacteria Cellular response to chemotaxis Microbicidal activity Eosinophils Lipid A deficiency of βglucocerebrosidase Lipid Viral infection False Old segmented neutrophils Protozoan 2 Hematology TB Flashcards Unit 3 46) Myelokathexis is ____. 47) Grading of toxic granulation is dependent on the __ (1)__ and the __(2)__ of granulation within the cellular cytoplasm. 48) A characteristic of lazy leukocyte syndrome is defective ____. 49) Lymphocyte life span disorder involving dysregulation of the apoptotic pathway include 50) The lymphocyte pool is of crucial importance to 51) Antigen-specific T lymphocytes expand in a primary immune response but ____ % survive in the memory pool. 52) After the peak of an immune response and the immune response diminishes, it has been observed that ____. 53) Homeostatic proliferation refers to ____. 54) At any one time, approximately ____% of the total body lymphocytes mass is present in the circulating blood. 55) The blood lymphocyte pool in adults is distributed with approximately ____% of T lymphocytes. 56) The blood lymphocyte pool in adults is distributed with approximately ____ % B lymphocytes. 57) The dominant type of leukocyte in a baby who is a few days old is 58) What is the correct definition of the term “absolute number of lymphocytes?” 59) What is the correct definition of the term “relative number of lymphocytes?” 60) What is the correct description for the lymphoblast stage of development? 61) What is the correct description for the prolymphocyte stage of development? The ability to release mature granulocytes into the blood 1. Coarseness 2. Amount Locomotion Chronic lymphocytic leukemia and Autoimmune lymphoproliferative syndrome Adaptive immunity Less than 10 Antigen-presenting cells decrease Control of T lymphocytes in secondary lymphoid organs and circulating blood 5 80 20 Lymphocytes Total number of lymphocytes compared with the total number of leukocytes Percentage of lymphocytes in relationship to the total population of leukocytes Nucleoli may be present; delicate chromatin pattern. Slightly condensed cytoplasm chromatin pattern; small amount of medium blue color cytoplasm with a thin, darker blue rim 3 Hematology TB Flashcards Unit 3 62) What is the correct description for the mature lymphocyte stage of development? 63) The average lymphocyte values in peripheral blood are __(1)__% at birth, __(2)__% at six months of age, and approximately __(3)__% after the age of ten years. 64) Small, sensitized and committed lymphocytes are called 65) A smudge cell is produced because the cell is 66) A major category of functionally active lymphocytes is A) T cells B) B cells C) NK lymphocytes D) All of the above 67) True or false? Sensitized T lymphocytes protect humans against viral infection. 68) True or false? T lymphocytes are responsible for chronic rejection in organ transplantation. 69) True or false? B lymphocytes reorganize foreign antigens. 70) Monoclonal antibodies are produced by fusing __(Choice X)__ and __(Choice Y)__. 71) Match the antigen designation with the appropriate distribution cluster. 1. CD4 2. CD10 (CALLA) 3. CD19 72) The cell membrane marker ____ is lost during early maturation of T and B cells. 73) B cells are recognized by the cell surface (CD) molecules such as A) CD19 B) CD20 C) CD22 D) All of the above Dense, clumpedappearing chromatin; light sky blue cytoplasm, very scanty 1. 31 2. 61 3. 38 Memory cells Old and fragile D True True False X = A plasma cell derived from a malignant tumor Y = A lymphocyte activated by a specific antigen 1. 35%–55% mature T cells 2. 90% all common ALLs 3. 5%–15% B cells TDT D 74) Calculate the absolute lymphocytes count using the following data: 11.36 × 109/L Total leukocyte count = 16.0 × 109/L; relative number of lymphocytes = 71% 4 Hematology TB Flashcards Unit 3 75) What is the most common nonmalignant cause of lymphocytosis in adolescence and adulthood? 76) Which particular leukocyte is affected in patients with infectious mononucleosis? 77) During what stage of life do most people seroconvert after exposure to Epstein-Barr virus? 78) The symptoms of infectious mononucleosis include all of the following except A) Extreme fatigue B) Malaise C) Trunk rash D) Fever 79) In addition to hematological studies to determine an infection with Epstein-Barr virus, what other definitive test can be performed? 80) The most common modes of transmission for cytomegalovirus (CMV) include all of the following except A) Close contact with infected secretions B) Blood transfusions C) Intact skin contact D) Intimate sexual contact Acute viral infection 81) When examining a peripheral blood smear of a patient suspected of having a cytomegalovirus infection, what would be observed? A slight lymphocytosis with more than 20% variant lymphocytes IgM; IgG 82) The definitive diagnosis of cytomegalovirus infection is the presence of CMV-specific ____ or increasing CMV-specific _____. 83) Human infection with toxoplasmosis is prevalent because of the definitive host. What is the host? 84) The clinical manifestations of an infection with toxoplasmosis include all of the following except A) Chills B) Fever C) Fatigue D) Diarrhea 85) Infectious lymphocytosis is most common in what population? 86) A peripheral blood smear from a 6-year-old boy with a leukocyte count of 49 x 109/L shows an increase in small, mature normallooking lymphocytes; an increase in eosinophils; and no lymphoblasts. What is the most probable diagnosis for this patient? 87) A child presents to the physician with a sputum producing cough with pain over the trachea. The complete blood count indicates an increased leukocyte count with a high absolute lymphocyte count. On peripheral smear, small mature lymphocytes are seen. What is this child’s condition? B lymphocytes Late adolescent C Epstein-Barr virus (EBV) antibody testing C Cat D Children Infectious lymphocytosis Bordetella pertussis infection 5 Hematology TB Flashcards Unit 3 88) All of the following conditions may cause lymphocytopenia, except A) Decreased production B) Increased destruction C) Blood donation D) Cytotoxic drugs 89) Patients with diagnosed DiGeorge syndrome show a decrease in which cell population? 90) The original designation for the human immunodeficiency virus (HIV) was HTLV. What was the predominant cell line responsible for the naming at the time of discovery? 91) Besides T lymphocytes, CD4 antigen is expressed on all of the following except A) Macrophages/monocytes B) B lymphocytes C) Granulocytes D) Lymph nodes 92) The human immunodeficiency virus (HIV) can remain dormant in ________until the late stage infection/disease manifestation? 93) What opportunistic infection is considered the hallmark of later phase HIV infection? 94) Which subset of lymphocytes is decreased in a patient with HIV infection? 95) What is the ratio of CD4+ to CD8+ cells in a non–HIV-infected individual? 96) The progressive decline in CD4+ cells leads to what overall condition for the patient? 97) When performing confirmatory testing for HIV infection, which glycoprotein is detected consistently during the infection stages? 98) Systemic lupus erythematosus (SLE) is more common in females than in males by what ratio? 99) Clinical symptoms for SLE include all of the following, except A) Arthralgia B) Arthritis C) Erythematosus rash over the bridge of the nose D) Trunk rash 100) What is the most common screening test for SLE? 101) High titers of __________ are seen in patients with SLE? 102) The presence of ANA titer of greater than _______ is considered substantial in indicating an immune response. 103) Which lymphocyte subset is disturbed in patients with SLE? 104) The difference between leukemia and lymphoma is C Total T lymphocytes Lymphocytes C T lymphocytes Pneumocystis carinii pneumonia T lymphocytes; CD4+ subset 2:1 Decrease in immune function Glycoprotein 41 8:1 D Antinuclear antibodies (ANA) test Double-stranded DNA 1:32 T lymphocytes; helper cells Myeloma is tumor in bone marrow 6 Hematology TB Flashcards Unit 3 105) Chronic leukemias have ____ prognosis of survival than acute leukemias. Several months to several years (treated) 106) Myelomas differ from both leukemias and lymphomas because they involve the overproduction of __(1)__ with concurrent production of __(2)__ 107) The type of cell that is diagnostic of Hodgkin-type lymphoma is 108) In lymphomas, malignant cells are confined to 1. Plasma cells 2. Antibodies Reed-Sternberg Organs with mononuclear phagocytes e.g., liver 109) The French-American-British classification separates ____ into D one of the broad leukocyte groups. A) Myelogenous B) Monocytic C) Lymphocytic D) All of the above 110) The newest WHO lineage classification includes Histiocytic/dendritic 111) Using the WHO 2008 classification, mature myeloid Genetic features neoplasms are stratified according to 112) The newest leukemia/lymphoma treatment is Molecule level drugs 113) A predisposing factor for Fanconi anemia is Genetic 114) Describe each genetic term. 1.Most common type of 1. Translocation DNA change 2. Deletion 2. Part of a 3. Inversion chromosome is lost 3.Part of a chromosome is reversed 115) Protooncogenes Are antecedents of oncogenes 116) Oncogenes are D A) Central regulators of growth in normal cells B) Genetic targets of carcinogens C) Altered versions of normal genes D) Both B and C 117) Tumor-suppressing genes D A) Are called antioncogenes B) Appear to regulate the proliferation of cell growth in normal cells C) Stimulate mitosis D) Both A and B 118) Chemical exposure is more strongly linked to an increased risk 1. Acute myelogenous of __(1)__ leukemia than __(2)__ leukemia. 2. Acute lymhoblastic 119) The most common genetic translocation in adults with chronic t(9;22) myelogenous leukemia (CML) is 120) A ubiquitous virus associated with leukemia/lymphoma is HBV 121) Secondary leukemia can emerge from Platinum-based therapy 7 Hematology TB Flashcards Unit 3 122) Leukemia, lymphomas, and multiple myeloma represent about ____% of cancer deaths in the United States. 123) The total annual number of newly diagnosed patients with lymphoma in the United States is ____ compared to the total number of patients with leukemia. 124) Among lymphoma patients, the prognosis is ____ for those with non-Hodgkin’s compared to those with Hodgkin’s. 125) Among leukemia patients, the most programs are for those with ____ leukemia. 126) Seventy five percent of leukemia in children (ages 0–14 years) is diagnosed as 127) Of patients diagnosed with ALL, about ____ will be adults. 128) Persons older than 60 years of age are most likely to develop ____ leukemia. 129) The most dramatic adult gender difference is seen in ____ leukemia. 130) Nearly 70% of adult patients with acute leukemia die from 131) The median survival time of an untreated patient with AML is 132) The percent of children with AML achieving at least one remission is __(1)__ compared to __(2)__ of adults achieving at least one remission. 133) More than ____% of adults with AML can be expected to survive 1 or more years, if treated early. 134) In AML prognosis, the laboratory factors that predict the poorest prognosis are the presence of __(1)__ and __(2)__. 135) The World Health Organization (WHO) classification is based on A) Morphology and cytochemistry B) Immunophenotype and genetics C) Clinical features D) All the above 136) In AML characterized by recurrent chromosome translocation, such as ____, patients generally have a favorable prognosis. 137) AML is the ____ leukemia subtype. 138) The clonal disorder in AML is characterized by ____ in hematopoietic progenitor cells. A) Maturation block B) Accumulation of acquired somatic genetic alternations C) Accelerated WBC maturation D) Both A and B 10 Greater Poorer Acute myeloid Acute lymphoblastic 33% Chronic lymphoblastic Chronic lymphoblastic Infection 3 months 1. 90% 2. 60%–70% 90 1. CO34 2. P-glycoprotein and Internal tandem duplication of FLT-3 D) All the above t(5;17) Most common D) 8 Hematology TB Flashcards Unit 3 139) In AML, alternations in normal mechanisms result in a clonal disorder of A) Self-removal B) Proliferation C) Differentiation D) All of the above 140) In AML, alternations in normal mechanisms result in a clonal disorder of A) Self-removal B) Proliferation C) Differentiation D) All of the above 141) The common feature(s) of myeloid neoplasm is(are) 142) Two major subgroups of AML have emerged when genetic classification is considered. One of the groups is 143) The other subgroup is 144) Micro-RNAs can ____. 145) AML is always characterized by ____. 146) Match cell surface antigens with the cell lineage or classification. 1. Myeloid lineage 2. T-cell lineage 3. B-cell lineage 4. Megakaryoblastic 147) The most common cancer in children younger than 15 years of age is __(1)__ and represents __(2)__% of cancer diagnoses of the age. 148) The peak ages for the epidemiology of AML in children and/or adults are __(1)__ and __(2)__ respectively. 149) A cell surface marker of importance in ALL is 150) ____ is associated with inferior survival in adults with ALL. 151) Approximately ____% of adult ALL patients demonstrate Ph chromosome. 152) ____ distinguishes MLL from classic ALL. 153) Clonal chromosomal abnormalities are found in ____ of those diagnosed with AML or ALL. 154) A cell surface marker of importance in monitoring bone marrow success is 155) Chronic lymphocytic leukemia (CLL) is classified as a ____ neoplasm by the World Health Organization (WHO). D) D) All of the above Abnormal stem cell fills marrow with abnormal hematopoiesis FTL3 gene Core-binding factor (CBF) complex Inhibit translation of proteins Increase in number of immature WBCs 1. CD13/CD15 2. CD5/CD7 3. CD19/CD20 4. CD41/CD7 1. ALL 2. 23 1. 3–5 years 2. Greater than 65 years TdT CD20 25 D) Two thirds CD34 B-cell 9 Hematology TB Flashcards Unit 3 156) Malignant lymphoproliferative disorders are characterized by Accumulation of lymphocytes 157) The median age of onset of CLL is ____ years. 65 158) CLL is more prevalent in __(4)__ than in __(5)__. 1. Males 2. Females 159) Most CLL lymphocytes are __(1)__ and in the late phase(s) of 1. Nondividing the ___(2)____cell cycle. 2. G0/G1 160) CLL cells are characterized by cell surface antigens ____. CD19+ 161) Increasing CLL cells in the peripheral blood result from ____. Decreased apoptosis 162) The BCL2 gene is over expressed in __(1)__ percent to 1. 65 __(2)__ percent of B-cell CLLS. 2. 70 163) The most consistent chromosomal abnormality in CLL is ____. Trisomy of chromosome 7 164) Molecules genetic detection of genomic arrangements is useful D in many ways including A) Detection of minimal residual diseases B) Diagnosis C) Prognosis D) All the above 165) Patients with CLL cells expressing a biologically significant A benign course of number of IgVH mutations more frequently have ____. disease 166) CD 38+ B-CLL patients are characterized by D A) More advance disease stage B) Poorer response to chemotherapy C) Shorter survival times D) All the above 167) MicroRNAs are Major direct negative regulators of BCL2 168) MicroRNAs can create an alteration in CLL such as D A) Invasion of apoptosis B) Self-sufficiency in growth C) Stimulation of angiogenesis D) All of the above 169) Nondiffuse pattern of bone marrow infiltration on biopsy. Low risk 170) Less than 30% CD38 expression. Low risk 171) Unmutated IgVH gene. High risk 172) β2-Microglobulin increase. High risk 173) In CLL, high disease activity is defined as Lymphocyte doubling time less than 6 months 174) The newest treatment for CLL is D A) Anti-CD20 monoclonal antibody B) Anti-CD25 monoclonal antibody C) Alkylating agents D) Both A and B 175) What is the most common treatment for patients who relapse Anti-CD25 monoclonal with CLL? antibody 10 Hematology TB Flashcards Unit 3 176) Hairy cell leukemia is more common in __(1)__ than in __(2)__. 177) Hairy cell leukemia (HCL) is so named because ____. 178) vHCL is ____ aggressive compared to HCL. 179) The prognosis for patients with multiple myeloma is usually 180) The antibody in the serum of patients with Multiple Myeloma (MM) is 181) What mutation was discovered and is now useful in the classification of MPU? 182-186: Indicate if the characteristic is associated with MPW. 182) Cytogenetic abnormality 183) Hypocellular bone marrow 184) Thrombotic or hemorrhagic bleeding 185) Extramedullary hematopoiesis 186) Transformation to acute leukemia 187) MPNs include all of the following except A) Chronic myelogenous leukemia B) Chronic lymphocytic leukemia C) Polycythemia rubra vera D) Primary myelofibrosis 188) Peripheral blood characteristics of ____ has RBC × 1012/L decreasing WBC × 109/L increasing significantly Platelets × 109/L moderately increasing 189) Peripheral blood characteristics of ____ has RBC ×1012/L decreasing WBC× 109/L variable Platelets× 109/L variable 190) Peripheral blood characteristics of ____ has RBC × 1012/L increasing significantly WBC × 109/L increasing Platelets × 109/L moderately increasing 191) Peripheral blood characteristics of ____ has RBC × 1012/L normal WBC × 109/L normal Platelets × 109/L increasing significantly 192) The ABL gene product is 193) True or false? The fusion protein BCR-ABL produces abnormal cell cycling. 194) True or false? The fusion protein BCR-ABL produces inhibition of apoptosis. 195) True or false? The fusion protein BCR-ABL produces accelerated mature cell lysis. 1. Males 2. Females The cytoplasmic membrane has a “hairy” appearance. More 1–3 years IgG Janus kinase 2 (JAK2) Yes No Yes Yes Yes B Chronic myelogenous leukemia Primary myelofibrosis Polycythemia Essential thrombocytosis Tyrosine kinase True True False 11 Hematology TB Flashcards Unit 3 196) True or false? The fusion protein BCR-ABL produces increased proliferation of leukocytes. 197) The most effective treatment with Imatinib (Gleevec) is at the ____ phase of CML. 198) A cytochemical stain to differentiate CML and a severe infection or inflammation is 199) True or false? Detecting gene arrangements involving BCRABL is useful for confirmation of Ph1-positive of CML. 200) True or false? Detecting gene arrangements involving BCRABL is useful to diagnose Ph’-negative cases of CML. 201) True or false? Detecting gene arrangements involving BCRABL is useful for the detection of minimal residual disease. 202) True or false? Detecting gene arrangements involving BCRABL is useful for the prognosis of CML survival. 203) Patients with CML (Ph’+) relapse because of ____. 204) Stem cell transplantation is a treatment option in approximately ____% of patients with CML. 205) The diagnostic test of choice for monitoring residual leukemia is ____. 206) Polycythemia was first described in 207) Risk factors in the development of PV include exposure to all of the following except A) Radiation B) Benzene C) Chloramphenicol D) Petroleum refineries 208) Is megakaryocytic proliferation with abnormal morphology a major or minor criteria for primary myelofibrosis? 209) Is anemia a major or minor criteria for primary myelofibrosis? 210) Is TAK2V617F or other related mutations a major or minor criteria for primary myelofibrosis? 211) Myelodysplastic syndromes are characterized by: 212) The first step in MDS is 213) In MDS, hematopoiesis is dysplastic because of inefficient maturation of 214) Refractory anemias with excess blasts are divided into ____ types in the 2008 WHO classification. True Chronic Alkaline phosphatase True True True False Leukemic subclones with imatinib-resistant BCR-ABL mutation 40 PCR 1910 C Major Minor Major Peripheral bold cytopenia Destabilization of multipotential progenitor cell Blood cell precursors Two 12 Hematology TB Flashcards Unit 3 215) An increased risk of developing MDS because of genetic predisposition is found in patients suffering from ____. A) Fanconi anemia B) Diamond-Blackfan anemia C) Down syndrome D) Both A and B 216) The risk of developing secondary MDS after alkylating therapy peaks at ____ years. 217) Most patients who develop MDS are ____ years of age or older. 218) The prognosis of patients with MDS is better for patients with ____. 219) Secondary MDS patients characteristically progress to acute leukemia ____ than patients with primary (de novo) MDS. 220) The MDS subtype RA has peripheral blood anemia, bone marrow unilineage dysplasia, and ____. 221) MDS subtype RAEB-1 has bone marrow with no Auer rods and peripheral blood with ____. 222) MDS subtype RARS has peripheral blood with no blasts and bone marrow with ____. 223) MDS subtype RAEB-2 has bone marrow with 10% –19% blasts and peripheral blood with ____. 224) Children with primary MDS can have clinical and laboratory features of 225) RBC changes in MDS reflect _1___ changes often similar to _2___. 226) In MDS, erythroblasts (rubriblasts) may be A) Multinucleated B) Fragmented C) Misshaped D) All of the above 227) Abnormal nuclear shapes of erythroblasts include 228) In MDS, the cytoplasm of rubriblasts may display 229) In MDS, neutrophils are often A) Hypergranular B) Agranular C) Hypogranular D) Both B and C 230) In MDS, the ratio of CD4+ to CD8+ lymphocytes is 231) In MDS, an abnormality in immunity can include 232) The megakaryocyte population in MDS may be ____. 233) Unless associated with recent cytotoxic therapy, a value of ____% in cytopenic patients suggests a diagnosis of MDS. D Four 60 Normal chromosome pattern Faster Less than 15% ring sideroblasts Less than 5% blasts Erythroid dysplasia Less than 1 109/L monocytes Juvenile chronic myeloid leukemia 1. Megaloblastic 2. Nutritional megaloblastic anemia D Lobes Punctate basophilic stippling D CD8 increased Decreased cellmediated immunity Large bizarre platelets Greater than 1 13 Hematology TB Flashcards Unit 3 234) The presence of internuclear bridging in MDS suggests 235) Intracellular alkaline phosphatase is ____ in MDS compared to normal controls. 236) In chronic myelomonocytic leukemia, the blasts in the bone marrow and peripheral blood are always ____. 237) A disorder that is provisionally included in the MDS/MPD unclassifiable is 238) In CMML, one form is considered to be _1___ compared to the other _2___. 239) Patients with some variety of MDS are at increased risk of developing 240) What agents has not been supported by scientific research as being associated with the development of secondary MDS? A. Alkylating agents B. Organic solvents C. Insecticides D. Both B and C 241) An increased incidence of MDSs is seen in An abnormality of mitosis Decreased Less than 20% Refractory anemia with ring sideroblasts and thrombocytosis (RARS-T) 1. A reactive monocytosis 2. Form that progresses to AML AML D males older than 55 years of age 242) The most frequently involved chromosomes in adults with MDS 5, 7, and 8 are 243) The most frequent chromosomal abnormalities in children with D MDS include all of the following except A. trisomy 8 B. monosomy 7 C. deletion of long arm of chromosome 20 D. all of the above 244) The incidence of chromosomal abnormality in adults with MDS 40% to 90% is 245) The karyotype associated with a high probability of D transforming to AML is A. monosomy 5 B. monosomy 7 C. trisomy 11 D. both A and B 246) Patients with MDSs commonly suffer from _____ initially Anemia 14 Hematology TB Flashcards Unit 3 247) Match the type of myelodysplastic syndrome with the appropriate description. Refractory anemia (RA) anemia, less than 1% blasts Refractory anemia with ring sideroblasts (RARS) anemia, no blasts Refractory anemia with excess blasts, type 1 (RAEB-1) cytopenia(s), less than 5% blasts, no Auer rods 248) In young patients, the therapy of choice for MDSs allogeneic bone marrow involves transplantation 15