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Related Experiment Video

Updated: Apr 12, 2026

Multi-photon Imaging of Tumor Cell Invasion in an Orthotopic Mouse Model of Oral Squamous Cell Carcinoma
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Multiple simultaneous primary oral squamous cell carcinomas: a previously unreported presentation.

J N St J Blythe1, P A Brennan1

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Summary

Multiple primary oral cancers are known, but five occurring simultaneously is exceptionally rare. This case report details such an instance and explores potential contributing factors.

Keywords:
MultipleOral squamous cell carcinomaSynchronous

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Area of Science:

  • Oncology
  • Oral Medicine
  • Cancer Research

Background:

  • Multiple primary oral squamous cell carcinomas (OSCC) can occur simultaneously.
  • The occurrence of more than two primary oral cancers is uncommon.

Observation:

  • A patient presented with five distinct primary oral squamous cell carcinomas at the same time.
  • This represents an unprecedented number of simultaneous primary oral cancers in a single individual.

Findings:

  • The case of five simultaneous primary oral cancers is, to our knowledge, the first reported instance.
  • The study discusses this exceptional presentation and proposes a potential etiological explanation.

Implications:

  • Highlights the importance of vigilant screening for multiple primary malignancies in oral cancer patients.
  • Contributes to understanding rare oncological presentations and potential risk factors for synchronous OSCC.