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4
4
PA diagnose
Odontogenic Myxoma
WHO: benign mesenchymal tumor
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Rare; locally invasive
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From dental papillae / peridontal ligament
Imaging
–
At ‘Tooth bearing areas’
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Mandible > maxilla
–
Displacement / resorption of dental
elements
Odontogenic myxoma
Male, 28 years
Therapy: left hemi-maxillectomy
Pre-op
Post-op
Indications panoramic dental X-ray
Dental status
–
Infection, retained (parts of) elements
Planning of extractions pre-radiotherapy
Planning of reconstruction post-surgery
Objectives
Ultrasound
Panoramic dental X-ray
CT
MRI
CT
Advantages:
–
Quick, widely available, cheap
–
Superior bone detail
–
Preferred method for nodal staging
Disadvantages:
–
Radiation exposure
–
Administration of iodine-containing agents
–
Inferior soft tissue contrast (vs MRI)
–
Dental filling metallic artifacts
Superior bone detail
Floor of mouth ca.
Soft tissue window
Bone window