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Related Experiment Videos

Granular cell ameloblastoma. A rare variant.

G Yamamoto1, K Yoshitake, K Tada

  • 1Department of Oral and Maxillofacial Surgery, Shiga University of Medical Science, Japan.

International Journal of Oral and Maxillofacial Surgery
|June 1, 1989
PubMed
Summary

This study details a rare granular cell ameloblastoma in the anterior mandible. Unlike common types, nearly all tumor cells exhibited eosinophilic granules, resembling oncocytoma.

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Area of Science:

  • Oral pathology
  • Tumor biology
  • Microscopy

Background:

  • Ameloblastoma is a common odontogenic tumor.
  • Granular cell ameloblastoma is a rare variant.
  • This study investigates a unique case in the anterior mandible.

Observation:

  • A 59-year-old male presented with a rare granular cell ameloblastoma.
  • Microscopic examination revealed extensive eosinophilic granules in tumor cells.
  • Some tumor areas showed resemblance to oncocytoma (oxyphilic adenoma).

Findings:

  • The observed granular cell ameloblastoma displayed diffuse granular cell morphology.
  • This contrasts with typical granular cell ameloblastomas where granularity is central.
  • Ultrastructural and light microscopy confirmed the distinct cellular features.

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Implications:

  • This case expands the understanding of granular cell ameloblastoma variants.
  • The findings may influence diagnostic criteria for ameloblastoma subtypes.
  • Further research into the pathogenesis of this variant is warranted.