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Related Concept Videos

Detailed Structure and Function of Lymph Nodes01:23

Detailed Structure and Function of Lymph Nodes

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.
From a histological perspective, lymph nodes can be split into two main areas: the superficial cortex and the deep medulla. The outer cortex is populated by dendritic cells, macrophages, and B lymphocytes, which are densely packed into follicles. When these B-lymphocytes are presented...
Development of the Lymphatic System01:15

Development of the Lymphatic System

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...
Lymphatic Vessels and Lymph Transport01:16

Lymphatic Vessels and Lymph Transport

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.
This one-way system allows fluids, solutes, and even pathogens to enter but prevents their return to the intercellular spaces.
Herniated Intervertebral Disc l: Introduction01:29

Herniated Intervertebral Disc l: Introduction

Intervertebral disc herniation refers to the displacement of the nucleus pulposus (the gel-like inner core of the disc) through a tear or weakened area in the annulus fibrosus (the outer fibrous ring). The displaced disc material extends beyond the normal boundaries of the disc space and may compress or irritate nearby spinal nerve roots or, less commonly, the spinal cord.Etiology and Risk FactorsHerniation commonly results from degeneration, in which aging reduces disc hydration and...
Abdominal Regions and Quadrants01:19

Abdominal Regions and Quadrants

To promote clear communication, for instance, about the location of a patient's abdominal pain or a suspicious mass, anatomists and clinicians typically use imaginary lines to categorize the abdominopelvic cavity into either four quadrants or nine regions to identify organs in the cavity.
The simpler quadrants approach, which is more commonly used in medicine, subdivides the cavity with one horizontal and one vertical line that intersects at the patient's umbilicus (navel). The four quadrants...
Secondary Lymphoid Organs01:15

Secondary Lymphoid Organs

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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Related Experiment Video

Updated: May 11, 2026

Single-port Non-liposuction Endoscopic Axillary Lymph Node Dissection in Breast Cancer Surgery
11:49

Single-port Non-liposuction Endoscopic Axillary Lymph Node Dissection in Breast Cancer Surgery

Published on: April 3, 2026

[Cervical, inguinal and abdominal lymphnode dissection].

T W Kraus1, K Suna, S Berkhoff

  • 1Klinik für Allgemein-, Viszeral- und Minimal Invasive Chirurgie, Krankenhaus Nordwest GmbH, Steinbacher 2-26, 60488, Frankfurt am Main, Deutschland. Kraus.Thomas@khnw.de

Der Chirurg; Zeitschrift Fur Alle Gebiete Der Operativen Medizen
|May 31, 2013
PubMed
Summary

Diagnostic lymph node dissections are oncological surgeries for diagnosing lymph node issues and staging tumors. Strategic planning and minimally invasive techniques are crucial for reducing patient morbidity.

Related Experiment Videos

Last Updated: May 11, 2026

Single-port Non-liposuction Endoscopic Axillary Lymph Node Dissection in Breast Cancer Surgery
11:49

Single-port Non-liposuction Endoscopic Axillary Lymph Node Dissection in Breast Cancer Surgery

Published on: April 3, 2026

Area of Science:

  • Oncology
  • Surgical Pathology
  • Surgical Oncology

Context:

  • Diagnostic lymph node dissections are essential oncological surgeries.
  • Procedures clarify lymph node pathologies and aid in tumor staging.
  • Techniques range from incisional biopsy to systematic dissection.

Purpose:

  • To define diagnostic lymph node dissections as oncological service surgery.
  • To outline the aims of clarifying diagnoses and staging tumors.
  • To discuss various procedural implementations and their strategic considerations.

Summary:

  • This content defines diagnostic lymph node dissections, covering their role in differential diagnosis and tumor staging.
  • It details various procedural approaches, including incisional biopsy, selective, and systematic lymph node dissection, highlighting sentinel lymph node lymphadenectomy.
  • Emphasis is placed on preoperative consensus between surgeons and oncologists, clear terminology, and strategic planning for potential surgical extensions.

Impact:

  • Enhances understanding of lymph node dissection procedures in oncology.
  • Promotes standardized terminology and strategic planning in surgical oncology.
  • Highlights the importance of considering minimally invasive techniques to reduce patient morbidity.