34 Spleen ANATOMY AND PHYSIOLOGY
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Questions and Answers

Which artery supplies blood to the spleen?

  • Inferior mesenteric artery
  • Superior mesenteric artery
  • Left gastric artery
  • Splenic artery (correct)
  • What is the function of the white pulp in the spleen?

  • Site of bacterial clearance
  • Immunologic function (correct)
  • Filtering of aged/damaged RBCs
  • Antigen processing
  • Which antibody is the largest producer in the spleen?

  • IgA
  • IgG
  • IgM (correct)
  • IgE
  • What is the role of the short gastrics and splenic artery in the spleen?

    <p>Contain short gastric arteries</p> Signup and view all the answers

    In the spleen, what occurs with the interaction between dendritic cells/macrophages and helper T cells?

    <p>Antigen processing</p> Signup and view all the answers

    What is the main function of the red pulp in the spleen?

    <p>Filtering of aged/damaged RBCs</p> Signup and view all the answers

    Which organ serves as a reservoir for platelets?

    <p>Spleen</p> Signup and view all the answers

    What is the most common congenital lack of ligaments holding the spleen in place?

    <p>Wandering spleen</p> Signup and view all the answers

    What is the primary treatment for idiopathic thrombocytopenic purpura (ITP)?

    <p>Steroids</p> Signup and view all the answers

    What is the cause of thrombotic thrombocytopenic purpura (TTP)?

    <p>ADAMTS13 defect</p> Signup and view all the answers

    Which condition is associated with a 0.1% risk of developing post-splenectomy sepsis syndrome (PSSS)?

    <p>Hodgkin's disease</p> Signup and view all the answers

    What is the treatment for warm antibody-type acquired immune hemolytic anemia?

    <p>Splenectomy</p> Signup and view all the answers

    What is the most common thalassemia, characterized by persistent HgbF?

    <p>Beta-thalassemia</p> Signup and view all the answers

    What type of cells are seen in Hodgkin's disease?

    <p>Reed-Sternberg cells</p> Signup and view all the answers

    'Spherocytosis' leads to less deformable RBCs and splenic culling/sequestration due to a deficit of which membrane protein?

    <p>'A' band 3 protein</p> Signup and view all the answers

    Which type of non-Hodgkin's lymphoma is generally associated with the worst prognosis?

    <p>Lymphocyte depleted</p> Signup and view all the answers

    What is the most common type of non-Hodgkin's lymphoma?

    <p>Nodular sclerosing</p> Signup and view all the answers

    What is the most common malignant splenic tumor?

    <p>Angiosarcoma</p> Signup and view all the answers

    Which condition is associated with Felty's syndrome?

    <p>Sarcoidosis of spleen</p> Signup and view all the answers

    What is the most common cause of chylous ascites?

    <p>Non-Hodgkin's lymphoma</p> Signup and view all the answers

    What is the recommended workup for lymphoma?

    <p>Bone marrow biopsy and gallium MRI or PET scan of the liver and spleen</p> Signup and view all the answers

    In which condition are Howell–Jolly bodies often seen?

    <p>Hyposplenism</p> Signup and view all the answers

    Which condition rarely requires splenectomy?

    <p>Splenosis</p> Signup and view all the answers

    Which condition manifests as anemia and decreased platelets due to splenomegaly?

    <p>Sarcoidosis of spleen</p> Signup and view all the answers

    Which is the #1 benign splenic tumor?

    <p>Hemangioma</p> Signup and view all the answers

    What is the most common cause of splenic artery or splenic vein thrombosis?

    <p>Pancreatitis</p> Signup and view all the answers

    What condition can lead to a low attenuation fluid collection in the lesser sac/postsplenectomy space?

    <p>Echinococcal splenic cyst</p> Signup and view all the answers

    Study Notes

    • The spleen receives blood supply from the splenic artery.
    • The white pulp in the spleen functions as a lymphoid tissue, producing immune cells.
    • IgM is the largest producer of antibodies in the spleen.
    • The short gastrics and splenic artery supply the spleen with oxygenated blood.

    Immune Function in the Spleen

    • Dendritic cells/macrophages interact with helper T cells in the spleen, facilitating immune responses.

    Red Pulp Function

    • The red pulp in the spleen filters the blood, removing old or damaged red blood cells and recycling iron.

    Platelet Reservoir

    • The spleen serves as a reservoir for platelets.

    Congenital Conditions

    • The most common congenital lack of ligaments holding the spleen in place is wandering spleen.

    Idiopathic Thrombocytopenic Purpura (ITP)

    • The primary treatment for ITP is corticosteroids.

    Thrombotic Thrombocytopenic Purpura (TTP)

    • TTP is caused by a deficiency of ADAMTS13, a metalloprotease.

    Post-Splenectomy Sepsis Syndrome (PSSS)

    • Hereditary spherocytosis is associated with a 0.1% risk of developing PSSS.

    Acquired Immune Hemolytic Anemia

    • The treatment for warm antibody-type acquired immune hemolytic anemia is corticosteroids and rituximab.

    Thalassemia

    • The most common thalassemia is HbF-Bart's, characterized by persistent HgbF.

    Hodgkin's Disease

    • Lymphocyte-predominant cells are seen in Hodgkin's disease.

    Hereditary Spherocytosis

    • A deficit of spectrin, a membrane protein, leads to less deformable RBCs and splenic culling/sequestration.

    Non-Hodgkin's Lymphoma

    • Mantle cell lymphoma is generally associated with the worst prognosis.
    • Diffuse large B-cell lymphoma is the most common type of non-Hodgkin's lymphoma.

    Malignant Spleen Tumors

    • Lymphoma is the most common malignant splenic tumor.

    Felty's Syndrome

    • Felty's syndrome is associated with rheumatoid arthritis, splenomegaly, and neutropenia.

    Chylous Ascites

    • The most common cause of chylous ascites is trauma.

    Lymphoma Workup

    • The recommended workup for lymphoma includes CT scans, PET scans, and bone marrow biopsies.

    Howell-Jolly Bodies

    • Howell-Jolly bodies are often seen in hereditary spherocytosis.

    Splenectomy

    • Hereditary spherocytosis rarely requires splenectomy.

    Hemolytic Anemia

    • Hemolytic anemia and decreased platelets can occur due to splenomegaly.

    Benign Spleen Tumors

    • Hemangioma is the most common benign splenic tumor.

    Splenic Artery or Vein Thrombosis

    • The most common cause of splenic artery or splenic vein thrombosis is pancreatitis.

    Low Attenuation Fluid Collection

    • A low attenuation fluid collection in the lesser sac/postsplenectomy space can occur due to a pseudocyst.

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    Description

    Test your knowledge on the anatomy and functions of the spleen with this quiz. Topics include the blood supply, ligaments, and roles in immune function and blood filtration.

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