Ameloblastoma

Resected left half of mandible for ameloblastoma (infiltration in the third molar area)

CT ameloblastoma of the tooth area 38

Ameloblastoma or adamantinoma is a benign tumor of ectodermal origin. It is the most common odontogenic tumor based on ameloblasts.

Description

• Benign tumor of the odontogenic epithelium .
• It grows in cancellous bone and destroys it.
• It deforms the face and causes tooth loss - a locally destructive effect.
• It grows very slowly.
• The cortical lamina is pushed out, it is thin on paper and cracks when touched (it is called crepitation).
• It is formed on the basis of uncut teeth or from a follicular cyst.

Occurrence

• In both sexes equally often, between the 30s and 40s.
• More often affected mandible in the molar landscape.

Variants

Follicular ameloblastoma

• Formed by islets of tumor tissue.

Plexiform ameloblastoma

• Epithelial tumor structures are in the lanes.

Squamous ameloblastoma

• There are tile structures in the center of the follicle.

Granular ameloblastoma

• At the center are clusters of large, oval, densely packed cells with finely granulated eosinophilic plasma. .

Therapy

Extirpation – in smaller tumors.

Jaw resection – for large lesions.

Complication

• Malignant reversal in ameloblastic carcinoma.

Links

References

• LIŠKA, Karel. Orofacial pathology. 1st edition. 1983.