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Related Concept Videos

Classification of Epithelial Tissues: Overview01:22

Classification of Epithelial Tissues: Overview

Epithelial tissues are classified according to the shape of the cells and the number of cell layers formed. Cell shapes can be squamous (flattened and thin), cuboidal (square-like, as wide as it is tall), or columnar (rectangular, taller than it is wide). Additionally, the nucleus shape helps identify the type of epithelial cells. Squamous cells have flattened disc-shaped nuclei, cuboidal cells have spherical nuclei, and columnar cells have elongated nuclei.
Based on the number of cell layers,...
Arteries of the Head and Neck01:26

Arteries of the Head and Neck

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...

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Related Experiment Video

Updated: Jun 27, 2026

Modified Radical Neck Dissection for Cervical Metastasis
06:05

Modified Radical Neck Dissection for Cervical Metastasis

Published on: February 20, 2026

Classification of neck dissections: an evolving system.

Alfio Ferlito1, K Thomas Robbins, Carl E Silver

  • 1Department of Surgical Sciences, University of Udine, Italy. a.ferlito@uniud.it

Auris, Nasus, Larynx
|November 21, 2008
PubMed
Summary
This summary is machine-generated.

This review traces the evolution of neck dissection techniques and classification systems, from radical to selective procedures. Current systems, while established, face challenges from new, more comprehensive classification methods.

Related Experiment Videos

Last Updated: Jun 27, 2026

Modified Radical Neck Dissection for Cervical Metastasis
06:05

Modified Radical Neck Dissection for Cervical Metastasis

Published on: February 20, 2026

Area of Science:

  • Surgical Oncology
  • Head and Neck Surgery
  • Anatomical Classification Systems

Background:

  • Neck dissection has evolved from radical procedures to more selective approaches for cervical metastatic disease.
  • The development of modified and selective neck dissections reflects advancements in surgical oncology.
  • Standardized classification systems emerged to categorize diverse neck dissection techniques.

Purpose of the Study:

  • To review the historical development of neck dissection procedures.
  • To analyze the evolution and impact of various neck dissection classification systems.
  • To compare established classification systems with recent proposals.

Main Methods:

  • Literature review of neck dissection techniques and classification systems.
  • Analysis of historical acceptance and adoption of different surgical approaches.
  • Comparison of the American Head and Neck Society/American Academy of Otolaryngology-Head and Neck Surgery system with the Japan Neck Dissection Study Group system.

Main Results:

  • Neck dissection evolved from radical to modified and selective approaches, gaining acceptance over decades.
  • Established classification systems, like the AHNS/AAO-HNS, categorize dissections into radical, modified, selective, and extended types.
  • A new Japanese system offers comprehensive shorthand but uses novel terminology, potentially hindering adoption.

Conclusions:

  • Neck dissection classification systems have evolved alongside surgical techniques.
  • Current systems provide a framework but may need adaptation to incorporate newer, more precise methods.
  • Integration of advantageous features from novel classification systems into existing terminology could improve clarity and adoption.