the radiology of benign neoplasms
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The Radiology of Benign Neoplasms. Juan F. Yepes, DDS, MD, MPH Assistant Professor Department of Diagnostic Radiology University of Kentucky Chandler Medical Center. The Radiology of Benign Neoplasms. Well defined Corticated Space occupying Displacement of teeth - PowerPoint PPT PresentationTRANSCRIPT
TheRadiology
ofBenign Neoplasms
Juan F. Yepes, DDS, MD, MPHAssistant Professor
Department of Diagnostic RadiologyUniversity of Kentucky Chandler Medical Center
The Radiology of Benign Neoplasms
Well defined Corticated Space occupying Displacement of teeth Directional resorption of teeth Displacement of anatomical structures
Displacement of periosteum
Internal structure: trabeculae & calcification
Unilocular / multilocular
The Radiology of Benign Neoplasms
Displacement of periosteum
Internal structure: trabeculae & calcification
Unilocular / multilocular
The Radiology of Benign Neoplasms
Displacement of periosteum
Internal structure: trabeculae & calcification
Unilocular / multilocular
The Radiology of Benign Neoplasms
Displacement of periosteum
Internal structure: trabeculae & calcification
Unilocular / multilocular
The Radiology of Benign Neoplasms
Cyst orBenign Neoplasm Benign Neoplasm Malignant Neoplasm
The Radiology of Benign Neoplasms
TheRadiology
ofBenign Neoplasms
I. Odontogenic
• Epithelial• Epithelial with induction/Mixed
(epithelial and mesenchymal)• Mesenchymal
The Radiology of Benign Neoplasms
Odontogenic
• Epithelial• Epithelial with induction/Mixed
(epithelial and mesenchymal)• Mesenchymal
Odontogenic
The Radiology of Benign Neoplasms
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Dental Lamina Ameloblastoma
Enamel organ Adenomatoid
Odontogenic Tumor
Root sheath of Hertwig Ameloblastic fibroma
Dental Lamina
Odontoma
• EpithelialAmeloblastomaSquamous odontogenic tumorAdenomatoid odontogenic tumor Calcifying epithelial odontogenic tumor Clear cell odontogenic tumor[Melanotic neuroectodermal tumor of infancy]
Odontogenic
The Radiology of Benign Neoplasms
Ameloblastoma
• Age: 20 - 50 years (predominantly 30s and 40s)
• Mandible:Maxilla = 85:15• 60% mandibular molar-ramus area
The Radiology of Benign Neoplasms
Ameloblastoma
10%
10%
3% 2%
15%60%
Ameloblastoma
• Unilocular• Multilocular (coarse septa) Soap bubble Honeycomb
The Radiology of Benign Neoplasms
The Radiology of Benign Neoplasms
The Radiology of Benign Neoplasms
The Radiology of Benign Neoplasms
Ameloblastoma
• Displacement or resorption of teeth• Extends beyond radiographic limits• Superior aspect often lost
The Radiology of Benign Neoplasms
The Radiology of Benign Neoplasms
The Radiology of Benign Neoplasms
The Radiology of Benign Neoplasms
The Radiology of Benign Neoplasms
Keratocyst Ameloblastoma
The Radiology of Benign Neoplasms
Simple Bone Cyst Ameloblastoma
The Radiology of Benign Neoplasms
• EpithelialAmeloblastomaSquamous odontogenic tumorAdenomatoid odontogenic tumor Calcifying epithelial odontogenic tumor Clear cell odontogenic tumor[Melanotic neuroectodermal tumor of infancy]
Odontogenic
The Radiology of Benign Neoplasms
Adenomatoid odontogenic tumor(AOT)
The Radiology of Benign Neoplasms
Adenomatoid odontogenic tumor(AOT)
• 10-20 (18 years of age)• anterior maxilla or mandible• radiolucent with radiopaque foci• may mimic dentigerous cyst
The Radiology of Benign Neoplasms
The Radiology of Benign Neoplasms
The Radiology of Benign Neoplasms
• EpithelialAmeloblastomaSquamous odontogenic tumorAdenomatoid odontogenic tumor Calcifying epithelial odontogenic tumor Clear cell odontogenic tumor[Melanotic neuroectodermal tumor of infancy]
Odontogenic
The Radiology of Benign Neoplasms
Calcifying epithelial odontogenic tumor (CEOT)
The Radiology of Benign Neoplasms
Calcifying epithelial odontogenic tumor (CEOT, Pindborg tumor)
• 10-90 (mean 40)• maxilla:mandible = 1:2• ramus-molar region
The Radiology of Benign Neoplasms
Calcifying epithelial odontogenic tumor (CEOT, Pindborg tumor)
• usually associated with impacted teeth
• unilocular or multilocular• radiolucent or with radiopaque foci
The Radiology of Benign Neoplasms
The Radiology of Benign Neoplasms
• Epithelial• Epithelial with induction/Mixed
(epithelial and mesenchymal)• Mesenchymal
Odontogenic
The Radiology of Benign Neoplasms
• Epithelial with inductionAmeloblastic fibromaAmeloblastic fibro-odontomaCompound odontomaComplex odontoma
Odontogenic
The Radiology of Benign Neoplasms
The Radiology of Odontomas
Radiographically, the appearance of is that of
surrounded by a radiolucent linesurrounded by a radiopaque line
a radiopaque mass
Tooth
a tooth
The Radiology of Odontomas
Odontoma (Odontome)
Radiographically, the appearance of an odontoma is that of
a radiopaque masssurrounded by a radiolucent linesurrounded by a radiopaque line
The Radiology of Odontomas
Odontoma (Odontome)
Or, radiographically, the appearance of an odontoma is that ofseveral radiopaque massessurrounded by a radiolucent linesurrounded by a radiopaque line
The Radiology of Odontomas
Compound Odontoma
The Radiology of Odontomas
Complex Odontoma
The Radiology of Odontomas
The Radiology of Odontomas
The Radiology of Odontomas
Radiographically, an odontoma is
a radiopaque mass (or several masses), surrounded by a radiolucent line, surrounded by a radiopaque line.
The Radiology of Odontomas
Complex Odontoma
The Radiology of OdontomasComplex Odontoma
A malfomation in which all the dental tissues are represented, individual tissues being mainly well-formed, but occurring in a more or less disorderly pattern.
The Radiology of Odontomas
The Radiology of Odontomas
The Radiology of Odontomas
The Radiology of Odontomas
Compound Odontoma
The Radiology of OdontomasCompound Odontoma
A malfomation in which all the dental tissues are represented in a more orderly pattern than in the complex odontoma, so that the lesion consists of many toothlike structures.
The Radiology of OdontomasCompound Odontoma
Most of these structures do not represent, morphologically, the teeth of the normal dentition, but in each one, enamel, dentin, cementum and pulp are arranged as in a normal tooth.
The Radiology of Odontomas
The Radiology of Odontomas
The Radiology of Odontomas
The Radiology of Odontomas
The Radiology of Odontomas
The Radiology of Odontomas
The Radiology of Odontomas
The Radiology of Odontomas
The Radiology of Odontomas
The Radiology of Odontomas
The Radiology of Odontomas
Ameloblastic Fibroma
primitive myxoid connective tissue
resemblance to dental pulp
strands of odontogenic epithelium 2 cells wide
Ameloblastic Fibro-odontoma
primitive myxoid connective tissue
resemblance to dental pulp
strands of odontogenic epithelium 2 cells wide
cells differentiate to produce enamel and dentin
The Radiology of Benign Neoplasms
Ameloblastic Fibro-odontoma
prominent enamel matrix often seen before final maturation of hard tissue
enamel and dentin in the form of compound or complex odontoma
Compound OdontomaComplex odontoma
prominent enamel matrix often seen before final maturation of hard tissue
enamel and dentin in the form of compound or complex odontoma
The Radiology of Benign Neoplasms
• Epithelial• Epithelial with induction/Mixed
(epithelial and mesenchymal)• Mesenchymal
Odontogenic
The Radiology of Benign Neoplasms
• Mesenchymal Odontogenic fibromaOdontogenic myxomaBenign cementoblastomaCementifying fibroma
Odontogenic
The Radiology of Benign Neoplasms
Odontogenic myxoma
The Radiology of Benign Neoplasms
Odontogenic myxoma
• 10-50 years (15-35, mean 30)• maxilla:mandible 1:1 • may be infiltrative and aggressive
The Radiology of Benign Neoplasms
Odontogenic myxoma
• “tennis racket” appearance (neither coarse nor fine septa)
• cortical expansion• root displacement rather than resorption
The Radiology of Benign Neoplasms
The Radiology of Benign Neoplasms
The Radiology of Benign Neoplasms
The Radiology of Benign Neoplasms
The Radiology of Benign Neoplasms
Benign cementoblastoma
The Radiology of Benign Neoplasms
Benign cementoblastoma
• second or third decade, usually before 25• continuous with root , which is resorbed• pulp vitality unrelated
The Radiology of Benign Neoplasms
Benign cementoblastoma
• radiopaque mass• surrounded by radiolucent line• surrounded by radiopaque line
The Radiology of Benign Neoplasms
The Radiology of Benign Neoplasms
The Radiology of Benign Neoplasms
The Radiology of Benign Neoplasms
The Radiology of Benign Neoplasms