Related Experiment Video
Updated: Feb 14, 2026

10:02
High-frequency Ultrasound Imaging of Mouse Cervical Lymph Nodes
Published on: July 25, 2015
19.7K
Prognostic Value of Lymph Node Yield and Density in Head and Neck Malignancies
Shayan Cheraghlou1, Michael Otremba1,2, Phoebe Kuo Yu1
11 Division of Otolaryngology, Department of Surgery, Yale School of Medicine, New Haven, Connecticut, USA.
Summary
Higher lymph node yield after neck dissection indicates better survival for head and neck cancer patients. Conversely, increased lymph node density suggests poorer outcomes, aiding treatment planning.
Area of Science:
- Oncology
- Surgical Pathology
Background:
- Lymph node yield and density in neck dissections are potential prognostic indicators.
- These metrics may inform patient counseling, treatment strategies, and quality assessment in head and neck cancer care.
Purpose of the Study:
- To systematically review and meta-analyze studies on the prognostic significance of lymph node yield and/or density.
- To evaluate the impact of these factors on patient outcomes after neck dissection for head and neck malignancies.
Main Methods:
- Systematic literature search of Ovid/Medline, Ovid/Embase, and NLM PubMed databases (1946-2017).
- Inclusion of English-language original research with survival analysis stratified by lymph node yield/density.
- Meta-analysis using the DerSimonian and Laird random effects model.
Main Results:
- Pooled analysis of 23 studies (from 350 initially identified articles).
- Increased lymph node yield was significantly associated with improved survival (HR, 0.833; 95% CI, 0.790-0.879).
- Increased lymph node density was significantly associated with poorer survival (HR, 1.916; 95% CI, 1.637-2.241).
Conclusions:
- Higher lymph node yield is a favorable prognostic indicator and a potential quality metric for neck dissections.
- Increased lymph node density predicts diminished survival and can guide postsurgical counseling and adjuvant therapy decisions.
Related Concept Videos
Arteries of the Head and Neck
3.6K
The human body's intricate network of arteries ensures that every organ system receives the necessary oxygen and nutrients for optimal function. The arterial network in the head and neck region is particularly complex, providing vital blood flow to the brain, eyes, and other critical structures. Prominent arteries in this region include the internal carotid arteries and the vertebral arteries.
The internal carotid arteries supply blood to the anterior portion of the cerebrum. They enter the...
The internal carotid arteries supply blood to the anterior portion of the cerebrum. They enter the...
3.6K
Veins of Head and Neck
5.8K
The blood drainage from the head and neck is primarily managed by three pairs of veins: the external jugular, internal jugular, and vertebral veins. The external jugular veins drain superficial scalp and face structures, passing over the sternocleidomastoid muscles to empty into the subclavian veins.
On the other hand, the vertebral veins, unlike their arterial counterparts, are not primarily responsible for brain drainage. Instead, they drain the cervical vertebrae, spinal cord, and some small...
On the other hand, the vertebral veins, unlike their arterial counterparts, are not primarily responsible for brain drainage. Instead, they drain the cervical vertebrae, spinal cord, and some small...
5.8K
Detailed Structure and Function of Lymph Nodes
5.1K
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...
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...
5.1K
ATP Yield
79.2K
Cellular respiration produces 30 - 32 ATP per glucose molecule. Although most of the ATP results from oxidative phosphorylation and the electron transport chain (ETC), 4 ATP are gained beforehand (2 from glycolysis and 2 from the citric acid cycle).
The ETC is embedded in the inner mitochondrial membrane and is comprised of four main protein complexes and an ATP synthase. NADH and FADH2 pass electrons to these complexes, which pump protons into the intermembrane space. This distribution of...
The ETC is embedded in the inner mitochondrial membrane and is comprised of four main protein complexes and an ATP synthase. NADH and FADH2 pass electrons to these complexes, which pump protons into the intermembrane space. This distribution of...
79.2K
Reaction Yield
60.6K
The theoretical yield of a reaction is the amount of product estimated to form based on the stoichiometry of the balanced chemical equation. The theoretical yield assumes the complete conversion of the limiting reactant into the desired product. The amount of product that is obtained by performing the reaction is called the actual yield, and it may be less than or (very rarely) equal to the theoretical yield.
60.6K
Muscles of the Anterior Neck
4.9K
The anterior neck muscles are the group of muscles covering the front part of the neck. These muscles are classified into three subgroups. The first one is the superficial muscles, the most visible muscles in the front of the neck. It includes the platysma and sternocleidomastoid. The second group is the suprahyoid muscles, located above the hyoid bone. This group comprises the digastric, mylohyoid, geniohyoid, and stylohyoid. Lastly, the infrahyoid muscles are found below the hyoid bone and...
4.9K

