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33 Cards in this Set
- Front
- Back
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Represents uncoordinated growth
Spreads by direct extension NOT metastasis Resembles original histology May have unlimited growth potential |
Benign Tumor
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Deffine:
Having the properties of Anaplasia Invasion and Metastasis |
Malignant
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Radiographic Features of Benign Tumors in the Jaws:
Periphery? Radiodensity? Ability to expand? Ability to displace? Resorption of roots? |
Benign Tumors Radiographically:
Periphery: Well Defined, Corticated, Smooth Radiodensity: RL,RO, Mixed Ability to expand and displace Resorbs Roots: YES! |
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What is the shape of a Benign Lesion?
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Round/Oval
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T or F: When Benign tumors grow they will displace structures and resorb bone but the most important feature is there ability to lay down new bone along the outer cortex to maintain the integrity of the bone.
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True
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Since benign tumors are usually encapsulated in CT there is generally a ___ band around the lesion
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Radiolucent
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What is the difference between Odontogenic and Non odontogenic lesions
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Origin
May have different location *Both have traditional benign features |
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Bone _____ are different from tumors because there growth is limited and often in response to a stimulus.
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Bone Hyperplasias
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Give 3 examples of bone hyperplasias.
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Palatal and Mandibular Tori
Exostoses |
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____ tori are usually found on the lingual surfaces of mandibular teeth.
It occurs in ___% of the population |
Mandibular Tori= Lingual Surface= 8%
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____ tori are usually found at the center of the palate and occurs in ____% of patients.
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Palatal Tori= 20% of pts
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_____ is a HYPERplasia of the bone within cortical plates.
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Exostosis
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What is another name for exostosis.
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Idiopathic Osteosclerosis
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Benign tumors are tumors from the _____.
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Odontogenic Apparatus
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Benign Tumors are classified into 3 groups. Name them
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Tumors of Odontogenic Epithelium
Tumors of Ectomesenchyme Mixed tumors (ectomesenchyme and epithelialium) |
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Most commonly significant odontogenic tumor
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Ameloblastoma
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Ameloblastoma Characteristics:
-Originates in the ____. -More common in what gender? -More common in what ages? -Growth is fast/slow? -Bone becomes____. -Race? |
Originates from the remnants of the Dental Lamina
Gender: Men Age: 20-50 yrs Growth: Slow Bone becomes THIN!!! Race= Blacks |
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Ameloblastoma Radiographically:
-What region generally? -Periphery? -Mutli or Unilocular? -Root Resorption? -Expansion and Displacement: YES |
Ameloblastomma Radiographically:
Region: Molar/Ramus Region Periphery: Well Defined, Corticated Multi AND Unilocular Root Resorption: YES -more so than other tumors Expansion and Displacement: YES |
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Ameloblastomas with multi-locuals have been said to look like a ____for small locules and ___ for large locules.
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Honeycomb= small locules
Soap Bubbles= large locules |
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What is the differential dx of an Ameloblastoma?
If in a young pt and there is a radiolucency surrounding the crown of an unerupted tooth. The best differential dx would be a ____. A monolocular tumor that has involved the roots of a functioning tooth may resemble a ____. How do you rule out a residual cyst from an ameloblastoma: How do you rule out a lateral periodontal cyst from an ameloblastoma How do you differentiate between a Giant Cell Granuloma and an Ameloblastoma Differentiate between an odontogenic myoxoma and an ameloblastoma |
Young pt w/ radiolucency around the crown of unerupted tooth: Dentigerous Cyst
Monolocular tumor w/ involved roots: Radicular Cyst Rule out a Residual cyst by the age of the pt. Ameloblastomas occur in older pts Rule of Lateral PD cyst from ameloblastoma by: -Age (Lat PD cyst occurs in younger pts) -Region (L PD cyst occur in the incisor, canine, premolar area) GCG are usually anterior to the molars, MORE Granular and ill defined Odontogenic Myxoma are RARE and the septa is thinner than in a ameloblastomma |
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Adematoid Odontogenic Tumor
Characteristics: -Gender? -Age -Slow or fast growing |
Gender: Female
Age= 5-50 year old Slow growing |
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Radiographic Features of Adenomatoid Odontogenic Tumor:
Location? Periphery? Radiodensity? Displacement, Expansion, Root Resorption? |
Location: Max Canines
Periphery: Well defined Radiodensity: 75% radiopaque// 25% radiolucent Displacement, Expansion and Root Resporption: YES |
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What does CEOT stand for?
This tumor is AKA? |
CEOT
Calcifying Epithelial Odontogenic Tumor AKA: Pindborg Tumor |
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CEOT's characteristics:
Gender? Age? Expansion? |
CEOT's
Age: Wide Range Gender: Males Expansion: YES |
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Radiographic Features of CEOT:
Mandible or Maxilla? Erupted/Unerupted Teeth? Periphery? Radiodensity? Displacement, expansion, absorption? |
CEOT's Radiographic Appearance:
Mandible (premolar/molar area) 52% associated with Unerupted teeth Periphery: well defined, diffuse borders Radiolucent with radiopacities closer to teeth Displacement, Expansion, Absorption= YES |
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Most common odontogenic tumor which occurs in the 2nd decade of life.
It can interfere with the eruption of the perm teeth It is divided into compound and complex Actual classification is a _____ of dental tissues. |
Odontoma
-most common tumor in the 2nd decade of life -interfer with perm teeth -divided into compound and complex -actualy classifed as a harmatoma of dental tissues |
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Odontoma Radiographic features
Periphery: Compound Odontoma location vs Complex Odontoma location? Prevents tooth eruption? Compound vs Complex internal structure? |
Both compound and complex odontoma are well defined and corticated// will prevent tooth eruption
Compound Odontoma location= Anterior Maxilla; Lots of little teeth Complex Odontoma location= Mandibular 1st and 2nd Molar region; irregular mass of calcified tissue |
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Ameloblastic Fibroma Characteristics
Age? Growth is slow/fast? Tooth displacement? May be associated with missing teeth? |
Age 5-20 years
Growth= slow Tooth displacement: YES Yes- it can be assocated with missing teeth? |
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Ameloblastic Fibroma Radiographic characteristics:
Location? Periphery? Uni/Multi-locular? Surrounding Structures? Radiodensity? |
Location: PM/M region in Mandible
Periphery: Well Defined/Coriticated Unilocular/Multilocuar: BOTH Surrounding stuctures are displaced apically or may not erupt Radiodensity: Radiolucent |
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Odontogenic Myxoma Characteristics:
Gender? Age? Associate with missing teeth? High/Low recurrence? |
Gender: More in females
Age: 10-30 Associated with missing teeth: YES High Recurrence |
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Radiographic features of Myxoma
Location Periphery Locules Septa Displacement of Teeth Root Resorption? |
Myxoma
-PM/M region of mandible -Well defined -Mutlilocular with THIN septa -Displaces adjacent teeth -Root Resorption RARE |
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Benign Cemetoblastoma Characteristics
Gender? Age? Growth: Slow/Fast? Pain? |
Benign cemetoblastomas
-Males -12-65 yrs -slow growing may displace teeth -tooth can have pain |
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Radiographic features of Benign Cementoblastoma
Region? Periphery? Radiodensity? Surrounding structures? |
Radiographic Features of benign cementoblastoma
Region: PM/M of Mandible Periphery: Well defined radiopacity w/ radiolucent halo Surrounding Structures: Obsures the outline of adjacent teeth and resorbs roots |
