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Classification of Epithelial Tissues: Overview

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.
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Related Experiment Video

Updated: Jul 23, 2026

Isolation of Epithelial Cells from Human Dental Follicle

Isolation of Epithelial Cells from Human Dental Follicle

Published on: November 5, 2021

[Calcifying odontogenic epithelial tumor--a clinical and morphological study]

N Polikhronov¹, I Popov, L Videnov

¹Service de Chirurgie Maxillofaciale, Sofia, Bulgarie.

Bulletin Du Groupement International Pour La Recherche Scientifique En Stomatologie & Odontologie

|September 1, 1995

Summary

This study details a calcifying epithelial odontogenic tumor in a young male patient. The benign tumor has distinct radiographic and microscopic features aiding diagnosis.

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Area of Science:

Oral Pathology
Odontogenic Tumors
Head and Neck Neoplasms

Background:

Calcifying epithelial odontogenic tumors (CEOTs), also known as Pindborg tumors, are rare benign odontogenic neoplasms.
These tumors typically occur in the mandible, often in the posterior region.

Observation:

A case study of a 29-year-old male with a CEOT in the right mandibular angle and ascending ramus.
The tumor presented with subtle clinical signs, a characteristic radiographic appearance, and distinct histopathological features.

Findings:

Histomorphology revealed polygonal epithelial cells, amyloid deposits, and calcified structures.
These distinctive microscopic features are crucial for accurate CEOT diagnosis.

Implications:

Early and accurate diagnosis of CEOTs is facilitated by understanding their clinical, radiological, and histopathological characteristics.
This case highlights the importance of recognizing the typical presentation of this rare benign tumor.