Imaging of Oral Cavity Cancer

An Exploration of Anatomy, Staging, and Imaging Findings

Slide1: Introduction

  • Dr. Gold Moniz, a world-renowned hedonic neuroradiologist, presents on the imaging of oral cavity cancer.
  • Dr. Moniz is the director of the Head and Neck Imaging Fellowship Program and an associate professor at Columbia University Medical Center in New York.
  • She has taught residents and fellows in Boston and New York, earning a well-respected reputation in the field of education.
  • The topic of today's presentation is the imaging of oral cavity cancer, particularly relevant in regions like Tanzania where it is more prevalent.

Slide2: Anatomy of the Oral Cavity

  • The oral cavity is the most anterior subdivision of the aerodigestive tract.
  • It can be divided into the oral cavity proper and the vestibule.
  • Different sub-sites within the oral cavity include the tongue, buccal mucosa, alveolar ridge, hard palate, and floor of mouth.
  • Understanding the anatomy is crucial for accurate interpretation of imaging studies.

Slide3: Staging of Oral Cavity Cancer

  • Staging of oral cavity cancer is done according to the AJCC classification system.
  • The 8th edition introduced the concept of depth of invasion for oral tongue cancers.
  • Factors considered for staging include tumor size, invasion of surrounding structures, and lymph node involvement.
  • Accurate staging helps determine appropriate treatment options.

Slide4: Imaging Findings: Oral Tongue Cancer

  • Oral tongue cancer is primarily located on the lateral margins or undersurface of the tongue.
  • Depth of invasion is a crucial prognostic factor for oral tongue cancer.
  • Additional imaging considerations include involvement of the lingual septum, midline crossing, and invasion of adjacent structures.
  • Key findings to look for include bone involvement, perineural extension, and lymph node metastasis.

Slide5: Imaging Findings: Buccal Mucosa Cancer

  • Buccal mucosa cancer commonly presents as thickening of the mucosa in the cheek region.
  • Puff cheek technique and oblique imaging can help visualize subtle lesions.
  • Important imaging considerations include detection of bone involvement, extension into the retromolar trigon, and invasion of adjacent structures.
  • Look for features like rounded lymph nodes, perineural spread, and parotid gland involvement.

Slide6: Imaging Findings: Alveolar Ridge and Hard Palate Cancer

  • Alveolar ridge and hard palate cancers often exhibit bone involvement.
  • Extension along the greater palatine foramen and the masticator space should be evaluated.
  • Detection of perineural spread and invasion of adjacent structures is crucial.
  • MRI imaging is preferred for assessing soft tissue extension.

Slide7: Conclusion

  • Imaging plays a vital role in the evaluation and staging of oral cavity cancer.
  • Accurate assessment of depth of invasion, bone involvement, and extension into adjacent structures guides treatment decisions.
  • Collaboration between radiologists, surgeons, and radiation oncologists is essential for optimal patient care.
  • Continued research and advancements in imaging techniques contribute to improved outcomes for patients.

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