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Related Concept Videos

Glial Cells01:04

Glial Cells

Overview
Functions of the Lymphatic and Immune System01:28

Functions of the Lymphatic and Immune System

The lymphatic system plays a crucial role in bolstering our immune system. It consists of a network of lymphoid organs, lymph, and lymphatic vessels that provide structural and functional support in safeguarding the body against pathogens such as viruses and bacteria.
The primary lymphoid organs, including the bone marrow and the thymus, serve as the maturation sites for lymphocytes. Secondary lymphoid organs, like the mucosa-associated lymphoid tissue, activate these lymphocytes and serve as...
Lymphoid Cells and Tissues01:18

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Lymphoid cells and tissues are integral to the immune system, which is crucial in maintaining our body's defense against harmful pathogens. They form the building blocks of lymphoid organs, which include the spleen, thymus, and lymph nodes.
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Primary Lymphoid Organs01:16

Primary Lymphoid Organs

Primary lymphoid organs are pivotal in the formation, development, and maturation of lymphocytes, the white blood cells that serve as the backbone of our immune system. This crucial function underscores their fundamental role in maintaining our overall health and immunity. The two primary lymphoid organs of prime importance are the red bone marrow and the thymus.
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Secondary Lymphoid Organs01:15

Secondary Lymphoid Organs

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The spleen is a vital organ in the lymphatic system, nestled in the upper left side of the abdomen. It is composed of two primary regions: the red pulp and the white pulp, each having distinct functions. The red pulp performs a significant role in blood filtration. It efficiently purges the blood of old or damaged red blood cells and...
Cells of the Adaptive Immune Response01:23

Cells of the Adaptive Immune Response

The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...

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Tumor Engraftment in a Xenograft Mouse Model of Human Mantle Cell Lymphoma
10:52

Tumor Engraftment in a Xenograft Mouse Model of Human Mantle Cell Lymphoma

Published on: March 30, 2018

Primary central nervous system lymphoma

H A Fine1, R J Mayer

  • 1Division of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02115.

Annals of Internal Medicine
|December 1, 1993
PubMed
Summary
This summary is machine-generated.

Primary central nervous system lymphoma presents differently in immunocompetent individuals versus those with AIDS. Survival rates are significantly lower for AIDS patients, highlighting the need for better HIV control to improve outcomes.

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Area of Science:

  • Neurology
  • Oncology
  • Infectious Diseases

Background:

  • Primary central nervous system lymphoma (PCNSL) is a rare malignancy affecting the brain, spinal cord, or meninges.
  • The incidence and presentation of PCNSL can be significantly altered in individuals with acquired immunodeficiency syndrome (AIDS) due to their compromised immune status.

Purpose of the Study:

  • To compare the pathogenesis, clinical presentation, therapy, and prognosis of PCNSL in immunocompetent individuals versus patients with AIDS.
  • To evaluate the impact of current treatment strategies on survival rates for both groups.

Main Methods:

  • A comprehensive review of English-language literature published between 1980 and 1992 concerning PCNSL or AIDS was conducted.
  • Data on patient characteristics, clinical symptoms, histological findings, treatment, and survival were extracted from case reports and reviews.
  • A total of 792 patients with non-AIDS-associated PCNSL and 315 patients with AIDS-associated PCNSL were analyzed.

Main Results:

  • Patients with AIDS presented with more global neurologic symptoms and exhibited multifocal, ring-enhancing lesions on CT scans, a pattern less common in immunocompetent patients.
  • Overall survival for non-AIDS PCNSL patients was 18.9 months, significantly longer than the 2.6 months observed in AIDS patients.
  • Treatment differences, including radiation and chemotherapy, did not substantially alter survival outcomes for AIDS patients compared to non-AIDS patients.

Conclusions:

  • PCNSL is a distinct disease in patients with and without AIDS, differing in presentation and prognosis.
  • Therapeutic advances for PCNSL in immunocompetent individuals have not translated to improved outcomes for AIDS patients.
  • Significant survival improvements for AIDS patients with PCNSL are contingent upon effective management of their underlying human immunodeficiency virus (HIV) infection.