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Related Experiment Videos

Mandibular invasion diagnosed by SPECT

A J Curran1, M Toner, A Quinn

  • 1Professorial Department of Otolaryngology, St James's Hospital, Dublin, Ireland.

Clinical Otolaryngology and Allied Sciences
|December 1, 1996
PubMed
Summary

Single photon emission computed tomography (SPECT) shows promise for detecting mandibular invasion by squamous cell carcinoma. This imaging technique, when used with CT scans, can improve pre-operative assessment for oral cancer patients.

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Area of Science:

  • Oncology
  • Radiology
  • Surgical Pathology

Background:

  • Accurate pre-operative assessment of mandibular invasion by carcinoma is crucial for effective surgical planning.
  • Existing methods like clinical examination and CT scans have limitations in sensitivity and specificity for detecting bone invasion.

Purpose of the Study:

  • To compare the diagnostic accuracy of single photon emission computed tomography (SPECT) against clinical examination and high-resolution computed tomography (CT) for assessing mandibular invasion by squamous cell carcinoma.
  • To evaluate the sensitivity and specificity of each imaging modality in detecting mandibular invasion prior to surgery.

Main Methods:

  • Prospective study involving 29 patients with oral cavity/oropharyngeal carcinoma.
  • Comparison of clinical examination, high-resolution CT, and SPECT imaging.

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  • Resected mandibles were histopathologically examined for tumor infiltration post-surgery.

    • Main Results:

    • Clinical examination showed 90% sensitivity and 25% specificity for bone invasion.
    • CT imaging demonstrated 89% sensitivity and 57% specificity.
    • SPECT imaging achieved 100% sensitivity but only 29% specificity.

    Conclusions:

    • SPECT imaging is highly sensitive for detecting mandibular invasion.
    • SPECT imaging is complementary to CT scanning, enhancing the pre-operative assessment of mandibular invasion by squamous cell carcinoma.
    • Further refinement may improve SPECT's specificity for better surgical planning.