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Location of splenic vein (with respect to splenic artery)
Posterior, inferior
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Organ that is the largest producer of IgM
Spleen
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Filter for aged or damaged RBCs
Red pulp
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Removal of abnormalities in RBC membranes (job of the spleen)
Pitting
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Nuclear remnants in RBCs
Howell Jolly bodies
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Hemoglobin deposits in RBCs
Heinz bodies
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Portion of spleen containing lymphocytes and macrophages
White pulp
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Site of spleen that does bacterial clearance (that lack pre-existing antibodies)
White pulp
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Blood supply to spleen
Splenic artery, short gastrics, left gastroepiploic
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An opsonin that facilitates phagocytosis
Tuftsin
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An enzyme that activates alternative complement pathway
Properdin
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Most common location for accessory spleen
At splenic hilum
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Most common nontraumatic condition requiring splenectomy
ITP
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Disease with antiplatelet antibodies, petechiae, gingival bleeding, bruising
ITP
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Medical treatments for ITP
Steroids, plasmapheresis, gammaglobulin (if steroid resistant)
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Disease with loss of platelet inhibition leading to thrombosis and infarction plus thrombocytopenia, fevers, mental status changes, renal dysfunction
TTP
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Treatment of TTP
Plasmapheresis, steroids, ASA
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Bacteria causing postsplenectomy sepsis syndrome (3)
S. pneumoniae, H. influenzae, N. meningitides
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Vaccines needed before splenectomy
Pneumococcus, meningococcus, H. influenzae
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Changes in CBC post splenectomy
Inc RBCs, inc WBCs, inc platelets
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Most common splenic tumor
Hemangioma
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Most common malignant splenic tumor
nonHodgkin's lymphoma
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indication for removal of splenic cysts
symptomatic, >10cm
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causes of secondary hypersplenism
inc venous pressure (portal HTN, CHF), cancer (leukemia), chronic inflammatory disease (Felty's syndrome, SLE, sarcoid), myeloproliferative disease, amyloidosis, AIDS, hemolytic anemias, polycythemia vera
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indications for splenectomy associated with hypersplenism
ANY primary hypersplenism (rare), CLL, CML, NHL, Hodgkin's, hairy cell, hemolytic anemia, sarcoid
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Rheumatoid arthritis, hepatomegaly, splenomegaly
Felty's syndrome
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Lipid metabolism disorder leading to splenomegaly
Gaucher's disease
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Most common congenital hemolytic anemia requiring splenectomy
Spherocytosis
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Spectrin defect causing deformed RBCs and splenic sequestration
Spherocytosis
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Treatment of spherocytosis
Splenectomy
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Spectrin and protein 4.1 deficit causing deformed RBCs and splenic sequestration
Elliptocytosis
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Congenital hemolytic anemia causing altered glucose metabolism
Pyruvate kinase deficiency
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Congenital hemolytic anemia precipitated by infection, certain drugs, and fava beans
G6P deficiency
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Replacement of HgbA with HgbS, causes splenic auto-infarction
Sickle cell anemia
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Persistent fetal HgbF causing anemia, pallor, growth retardation, head enlargement
Thalassemias
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Hodgkin's disease class A
Asymptomatic
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Hodgkin's disease class B
Symptomatic (night sweats, fever, weight loss)
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Hodgkin's disease with 2 noncontiguous areas on the same side of diaphragm
Stage II
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Hodgkin's disease with involvement on both sides of the diaphragm
Stage III
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Most common subtype of Hodgkin's disease
Nodular sclerosing
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Cells seen on cytology for Hodgkin's
Reed Sternberg cells
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Most common subtype of NonHodgkin's lymphoma
B cell lymphoma (90%)
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Treatment of NHL
XRT, chemotherapy (vincrisine, cyclophosphamide, prednisone, Adriamycin)
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Treatment of Hodgkin's lymphoma
XRT, chemotherapy (vincristine, cyclophosphamide, prednisone, procarbazine)
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Causes of spontaneous splenic rupture (6)
Mononucleosis, malaria, sepsis, sarcoid, leukemia, polycythemia vera
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Splenic implants, often caused by trauma
Splenosis
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Most common cause of splenic artery or splenic vein thrombosis
Pancreatitis
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