Hematology Flashcards
4 Sites of hematopoiesis
Yolk sac, liver, spleen, bone marrow
2 heme precursors
Succinyl CoA
Glycine
Source of energy by the RBC
Anaerobic glycolysis
Vitamin B12 and folic acid deficiency
Megaloblastic anemia
Last stage of RBC with a nucleus
Orthochromatic erythroblast
Premature RBCs, increased in hemolysis
Reticulocyte
Hemoglobin with 2 alpha, 2 beta chains
Adult hemoglobin
Hemoglobin with 2 alpha, 2 gamma chains
Fetal hemoglobin
Transfers iron in the blood
Transferrin
Stores iron in the liver
Ferritin
For additional iron storage
Hemosiderin
Release histamine and heparin, involved in allergies
Basophils
Process that requires glycoprotein 1b and von willebrand factor
Platelet adhesion
Process that requires glycoprotein IIb-IIIa and fibrinogen
Platelet aggregation
Smallest Ig
IgG
Largest Ig
IgM
Ig involved in allergies and parasitic infections
IgD
Patches of dilated endoplasmic reticulum that appear as sky blue cytoplasmic puddles
Dohle bodies
Distinctive needle-like azurophilic granules found in myeloblasts
Auer rods
Small lymphocytes disrupted in the proces of making smears
Smudge cells
Large cells with multiple nuclei or a single nucleus with multiple lobes
Reed-sternberg cells
Cells found in adult T-cell lymphoma which appears to have multi-lobulated nuclei
Cloverleaf or flower cells
Deatructive plasma cell tumors involving axial skeletons
Plasmacytoma
Fiery red cytoplasm
Flame cells
Pink globular cytosplasmic inclusions
Russel bodies
Blue globular cytoplasmic inclusions
Dutcher bodies
M proteins causing RBCs to stick in linear arrays
Rouleaux conformation
Erythroblasts with iron-laden mutichondria visible as perinuclear granules
Ringed sideroblast
Neutrophils with only 2 nuclear lobes
Pseudo-pelger huet cells
Megakaryocytes with single nuclear lobes or multiple separate nuclei
Pawn ball megakaryocytes
Premature release of nucleated erythroid and early granulocyte progenitors
Leukoerythroblastosis
Cells that were probably damaged during the birthing process in the fibrotic marrow
Teardrop cells or dacrocytes
Pentalaminar tubules, often with a dilated terminal end (tennis racket-like appearance)
Birbeck granules
Small yellow brown, brown or rust colored foci in the spleen
Gandy-gamma nodules
Dohle bodies
Severe infection
Auer rods
AML
Sea blue histiocytes
CML
Smudge cells
CLL
Reed sternberg cells
Hodgkin’s lymphoma
Cloverleaf or flower cells
Adult T-cell lymphoma
Plasmacytoma
Multiple myeloma
Flame cells
Multiple myeloma
Russel bodies
Multiple myeloma
Dutcher bodies
Multiple myeloma
Rouleaux formation
Multiple myeloma
Ringed sideroblasts
Sideroblastic anemia
Pseudo-Pelger-Huet cells
Myelodysplastic syndrome
Pawn ball megakaryocytes
Myelodysplastic syndrome
Leukoerythroblastosis
Primary myelofibrosis
Teardrop cells or dacrocytes
Primary myelofibrosis
Birbeck granules
Langerhans cell histiocytosis
Gandy gamna nodules
Congestion of the spleen
HL vs NHL: associated with HIV and immunosuppression
NHL
HL vs NHL: multiple peripheral nodes; extranodal involvement common, non-contiguous spread
NHL
HL vs NHL: low grade fever, night sweats, weight loss
HL
HL vs NHL: EBV association, bimodal distribution
HL
Most common type of HL
Nodular sclerosis
Lacunar variant RS cells is a characteristic of what type of HL
Nodular sclerosis
HL with best prognosis
Lymphocyte rich
Mononuclear varianf RS cells
Type of HL that contains popcorn cells
Lymphocyte predominant
HL with worst prognosis
Lymphocyte-depleted
Most common type of NHL
Diffuse large B cell
Translocation on chromosome 8; presents with starry-sky pattern
Burkitt’s lymphoma
Biopsy reveals homogenous population of small lymphocytes; does not have centroblasts and proliferation centers
Mantle cell lymphoma
Excess light or heavy chains along with complete Ig synthesized by neoplastic plasma cells
Bence-Jones proteins
Tumor of thymus associated with myasthenia gravis and pure red cell aplasia
Thymoma
Most important monoclonal gammopathy usually presenting as tumorous masses scattered throughout the skeletal system
Multiple myeloma
Small hyperchromic RBC lacking central pallor
Spherocytes
Small dark nuclear remnants in RBCs of asplenic patients
Howell-jolly bodies
Membrane-bound precipitates on denatured globin chains
Heinz bodies
RBCs with damaged membranes due to removal of Heinz bodies by splenic macrophages
Bite cells
RBCs shaped like curved blades
Sickle cells
Dehydrated RBCs with bull’s eye appearance
Target cells (codocytes)
Fragmented RBCs; also called helmet cells if cut in half
Schistocytes
RBCs with spikes
Burr cells or echinocytes
Spherocytosis
Hereditary spherocytosis
Howell jolly bodies
Asplenia
Heinz bodies
G6PD deficiency
Bite cells
G6PD deficiency
Target cells
Sickle cell anemia and thalassemia
Schistocytes
RBC trauma, drugs, HUS
Burr cells or echinocytes
RBC trauma
Triad of hemolytic anemia
Pallor
Jaundice
Splenomegaly
Differentiates intravascular from extravascular hemolysis
Presence of splenomegaly jn extravascular hemolysis
Autosomal dominant disorder caused by intrinsic defects in the red cell membrane; increased MCHC
Hereditary spherocytosis
Intracvascular hemolysis due to increased complement-mediated RBC lysis
Paroxysmal Nocturnal hemoglobinuria
Hemolytic anemia seen in DIC, TTP-HUS, SLE, and malignant hypertension
Micoangiopathic hemolytic anemia
Caused by trauma to RBCs in individuals with cadiac valve prostheses
Macroangipathic hemolytic anemia