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Related Concept Videos

Detailed Structure and Function of Lymph Nodes01:23

Detailed Structure and Function of Lymph Nodes

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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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Secondary organs, including lymph nodes, the spleen, and mucosa-associated lymphoid tissue (MALT), work harmoniously to protect us from disease and infection.
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Related Experiment Video

Updated: Nov 8, 2025

Author Spotlight: Demonstrating Systematic Endobronchial Ultrasound to New Endoscopists
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Mediastinal lymphadenopathy: a practical approach.

Hariharan Iyer1, Abhishek Anand2, P B Sryma1

  • 1Department of Pulmonary, Critical Care and Sleep Medicine, All India Institute of Medical Sciences (AIIMS), New Delhi, India.

Expert Review of Respiratory Medicine
|April 23, 2021
PubMed
Summary
This summary is machine-generated.

Mediastinal lymphadenopathy diagnosis relies on integrating clinical, imaging, and pathology findings. Endosonographic techniques like EBUS-TBNA offer a minimally invasive approach for accurate tissue diagnosis, crucial for effective patient management.

Keywords:
Mediastinumendobronchial ultrasoundlung cancerlymph nodesarcoidosistuberculosis

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Area of Science:

  • Pulmonology
  • Oncology
  • Radiology

Background:

  • Mediastinal lymphadenopathy presents with diverse benign and malignant causes, varying by demographic.
  • Thoracic imaging is the primary detection method for enlarged mediastinal lymph nodes.
  • Common etiologies include lung cancer, lymphoma, sarcoidosis, and tuberculosis.

Purpose of the Study:

  • To review the causes and diagnostic modalities for mediastinal lymphadenopathy.
  • To present a practical approach for evaluating patients with this condition.
  • To highlight the importance of accurate diagnosis for optimal management.

Main Methods:

  • A comprehensive literature search of the PUBMED database was conducted.
  • Relevant articles on causes, imaging, and interventional diagnostic techniques were identified and analyzed.
  • The review focuses on integrating clinical, radiological, and pathological findings.

Main Results:

  • Malignancies and granulomatous diseases are the most frequent causes of mediastinal lymphadenopathy.
  • Endosonographic modalities such as Endobronchial Ultrasound-Transbronchial Needle Aspiration (EBUS-TBNA), Endoscopic Ultrasound-Fine Needle Aspiration (EUS-FNA), and EUS-B-FNA are highly effective.
  • These minimally invasive techniques provide a high diagnostic yield and are central to current diagnostic strategies.

Conclusions:

  • Accurate diagnosis of mediastinal lymphadenopathy is essential for guiding treatment decisions.
  • Physicians must be familiar with the clinico-radiological features of common causes.
  • Prioritizing least invasive diagnostic methods with high yield, particularly endosonography, is crucial for favorable patient outcomes.