• In incisive canal
• Most common non odontogenic cyst
• Asymptomatic unless 2ry infection

NB: Similar to radicular cyst, therefore rule out by:

• X-ray
• Tooth vitality test – vital in nasopalatine
• History of trauma

Histology

From stratified squamous to pseudostratified columnar

• Cyst wall:
  • Irregular thickness of fibrous wall
  • Neurovascular bundle
  • Variable inflammatory infiltrate
• Epithelial lining:
  • Goblet cells
  • Non keratinized stratified squamous epithelium
  • Pseudostratified ciliated columnar epithelium
• Lumen:
  • Serum exudate
  • Cholesterol clefts
  • Variable inflammatory cells

Radiology

• Midline radiolucency
• Symmetrical swelling in anterior palatal midline

Management

• Surgical enucleation
• Marsupialization

Picture