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Cyst Overview

• Definition: A cyst is a pathological cavity lined by epithelium, usually containing fluid or semisolid material.

• Classification of Cysts: Cysts are classified by etiology, tissue of origin, and location.

I. Classification of Cysts

1. By Etiology (Cause)

• Developmental Cysts: Arise from developmental processes, not inflammation.

• Fissural Cysts (inclusion cysts): Develop along fusion lines of bones/embryonic processes.

• Median anterior maxillary cyst

• Median palatal cyst

• Globulomaxillary cyst

• Median mandibular cyst

• Other Developmental Cysts:

• Nasoalveolar cyst

• Palatal cysts of the neonate

• Thyroglossal tract cyst

• Benign cervical lymphoepithelial cyst

• Epidermoid and dermoid cyst

• Heterotopic oral gastrointestinal cyst

• Odontogenic Cysts: Associated with tooth development.