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Clear cell odontogenic carcinoma.

G Iezzi¹, C Rubini, M Fioroni

¹Dental School, University of Chieti, Italy.

|February 21, 2002

Summary

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Clear cell odontogenic tumors (CCOT) are rare head and neck neoplasms. Previously considered benign, current evidence indicates they are aggressive carcinomas with metastatic potential.

Area of Science:

Oral and Maxillofacial Pathology
Head and Neck Oncology
Tumor Biology

Background:

Clear cell tumors in the head and neck typically originate from salivary or odontogenic tissues, or represent metastases.
While clear cells can be found in odontogenic cysts, neoplasms predominantly composed of clear cells are uncommon.
Existing classifications of clear cell odontogenic tumor (CCOT) are being revised due to observed aggressive behavior.

Observation:

Clear cell odontogenic tumors (CCOT) exhibit aggressive growth patterns, including frequent recurrences and metastatic disease.
A literature review identified 30 cases of CCOT with similar aggressive characteristics.
These tumors predominantly affect the anterior jaws, particularly the mandible, with a peak incidence in the 5th to 7th decades and a female predilection.

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Findings:

Clear cell odontogenic tumors (CCOT) demonstrate significant invasion into adjacent tissues.
Multiple recurrences and both regional and distant metastases are documented features of CCOT.
Current consensus reclassifies CCOT as a carcinoma, not a benign tumor, due to its sinister nature.

Implications:

The reclassification of CCOT as a carcinoma necessitates a reassessment of treatment strategies.
Understanding the aggressive potential of CCOT is crucial for accurate diagnosis and patient management.
Further research into the molecular mechanisms driving CCOT aggression may reveal novel therapeutic targets.