2016_Head & Neck COURSE BOOK

PA diagnose Odontogenic Myxoma

Odontogenic myxoma

 Male, 28 years  Therapy: left hemi-maxillectomy

 WHO: benign mesenchymal tumor – Rare; locally invasive – From dental papillae / peridontal ligament

 Imaging

– At ‘Tooth bearing areas’ – Mandible > maxilla – Displacement / resorption of dental elements

Pre-op

Post-op

Objectives

Indications panoramic dental X-ray

 Ultrasound

 Dental status – Infection, retained (parts of) elements

 Panoramic dental X-ray

 Planning of extractions pre-radiotherapy

 CT

 Planning of reconstruction post-surgery

 MRI

Superior bone detail Floor of mouth ca.

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

Soft tissue window

Bone window

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