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Related Concept Videos

Lymphoid Cells and Tissues01:18

Lymphoid Cells and Tissues

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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.
Lymphoid cells consist of various types of immune system cells. These include B and T lymphocytes, which are responsible for producing antibodies and killing infected cells, respectively. Dendritic cells act as messengers between the innate and adaptive...
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Secondary organs, including lymph nodes, the spleen, and mucosa-associated lymphoid tissue (MALT), work harmoniously to protect us from disease and infection.
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...
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Development of the Lymphatic System01:15

Development of the Lymphatic System

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The development of lymphatic tissues and vessels in embryonic life begins around the fifth week. These structures originate from the mesoderm layer, with lymph sacs emerging from developing veins.
The first lymph sacs to form are the paired jugular lymph sacs located at the junction of the internal jugular and subclavian veins. From these sacs, lymphatic capillary plexuses extend to the thorax, upper limbs, neck, and head, eventually forming lymphatic vessels. Each jugular lymph sac maintains a...
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Detailed Structure and Function of Lymph Nodes01:23

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Lymph nodes are bean-shaped structures that cluster along the lymphatic vessels in the inguinal, axillary, and cervical regions. Each node is divided into compartments by a capsule that extends trabeculae inward.
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Lymphatic Vessels and Lymph Transport01:16

Lymphatic Vessels and Lymph Transport

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Lymphatic vessels, known as lymphatics, are crucial in transporting lymph from peripheral tissues to our venous system. This process begins with lymph entering through tiny capillaries that branch through tissues. These capillaries have unique features such as larger diameters, thinner walls, and a distinctive one-way valve system formed by overlapping endothelial cells.
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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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Related Experiment Video

Updated: Aug 23, 2025

Tumor Engraftment in a Xenograft Mouse Model of Human Mantle Cell Lymphoma
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Lymphoma Presenting as a Soft Tissue Mass.

Joana Granadas1, Marta Baptista1, Sérgio Ferreira1

  • 1Hospital Prof. Doutor Fernando Fonseca, PT.

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|October 31, 2022
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Summary
This summary is machine-generated.

Skeletal muscle lymphoma is uncommon but important to diagnose. Early detection of this rare soft tissue mass is crucial for effective chemotherapy treatment.

Keywords:
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Area of Science:

  • Oncology
  • Pathology
  • Radiology

Background:

  • Lymphoma typically affects lymph nodes, but can involve extranodal sites.
  • Skeletal muscle involvement by lymphoma is a rare clinical presentation.
  • Accurate diagnosis is essential for timely and appropriate patient management.

Observation:

  • This case highlights the importance of considering lymphoma in the differential diagnosis of soft tissue masses.
  • Imaging findings can be nonspecific, requiring a high index of suspicion.
  • Histopathological examination is crucial for definitive diagnosis.

Findings:

  • Lymphomatous infiltration of skeletal muscle can mimic other soft tissue tumors.
  • Early recognition of extranodal lymphoma is key.
  • Chemotherapy is the primary treatment modality for lymphoma.

Implications:

  • Clinicians and radiologists should include lymphoma in the differential diagnosis of unexplained soft tissue masses.
  • Prompt diagnosis can lead to improved outcomes with chemotherapy.
  • Further research into the imaging characteristics of skeletal muscle lymphoma may be beneficial.