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Radiographic Interpretation > Solitary & Interradicular Radiolucencies > Flashcards

Solitary & Interradicular Radiolucencies Flashcards

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1
Q

What are the interradicular and solitary radiolucencies?

A
  • Incisive Canal (Nasopalatine) Cyst
  • Median Mandibular Cyst
  • Mid Palatine Cyst
  • Lateral Periodontal Cyst
  • (Traumatic) Solitary Bone Cyst
  • Posterior Lingual Mandibular Salivary Gland Depression (Bone Defect), (Stafne Cyst)
  • Focal Osteoporotic Bone Marrow Defect
  • Residual Cyst
  • Fibrous Healing Defect
  • Neuroma, Neurofibroma
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2
Q

What are the lines of embryonic fusion and sites of developmental cyst?

A

naso-labial
naso-palatine duct
median palatal

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3
Q

What is the most common line of embryonic fusion for a cyst to form?

A

naso-palatine duct

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4
Q

What is the incisive canal cyst/naso-palatine duct cyst?

A
  • Painless swelling
  • Sinus tract may be present
  • Not an aggressive cyst
  • Slow growing
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5
Q

What does the incisive canal cyst/naso-palatine duct cyst look like radiographically?

A
  • Unilocular radiolucency in vicinity of maxillary midline
  • Cause alterations to walls of incisive canals
  • Root divergence in cases of large cysts
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6
Q
A

incisive canal cyst/naso-palatine duct cyst

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7
Q

heart-shaped radiolucency

A

incisive canal cyst/naso-palatine duct cyst

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8
Q
A

aggressive incisive canal cyst/naso-palatine duct cyst

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9
Q
A

incisive canal cyst/naso-palatine duct cyst

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10
Q

What age/gender is the incisive canal cyst prevelant?

A

4th and 6th decades
male: female = 3:1

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11
Q

What site is most common for incisive canal cyst?

A

anterior maxilla; close to midline

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12
Q

What is the management for an incisive canal cyst?

A
  • Simple enucleation; degree of surgery is dependent on size of lesion
  • no treatment if not aggressive and patient wants to leave it
  • recurrence unusual
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13
Q

What is a median mandibular cyst?

A
  • asymptomatic
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14
Q

What does a median mandibular cyst look like radiographically?

A
  • Unilocular radiolucency in the symphyseal region
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15
Q

What is a mid-palatine cyst?

A
  • asymptomatic
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16
Q

What does a mid-palatine cyst look like radiographically?

A
  • Unilocular radiolucency
  • Palatal midline, posterior to papilla
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17
Q

What age/gender is the mid-palatine cyst prevelant?

A
  • any age
  • no gender predilection
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18
Q

What site is the most common for a mid-palatine cyst?

A

Midpalate posterior to papilla

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19
Q

What is the management for a mid-palatine cyst?

A

Simple enucleation; degree of surgery is dependent on size of lesion

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20
Q

What is a lateral periodontal cyst?

be very familar with this… easy to tell what it is

A

Asymptomatic, dome-shaped swellings of the interdental papilla, attached gingiva, or alveolar mucosa

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21
Q

What does a lateral periodontal cyst look like radiographically?

A
  • Well defined radiolucency
  • Round to ovoid
  • Normally in interradicular areas between alveolar crest and apices
  • May or may not come in contact with the root surface
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22
Q
A

lateral periodontal cyst

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23
Q
A

lateral periodontal cyst

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24
Q

What age/gender is the lateral periodontal cyst prevelant?

A
  • adult
  • male
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25
What site is the lateral periodontal cyst most common?
Mandible – Canine–premolar region
26
What is the management for a lateral periodontal cyst?
- Surgical enucleation - The cyst does not recur - Must be differentiated from early stage OKC’s and ameloblastomas
27
What is a simple bone cyst?
Normally asymptomatic, may have swelling or pain
28
What are the other names for simple bone cyst?
Unicameral Bone cyst Solitary Bone Cyst* Hemorrahgic Bone Cyst* Intravasational Bone Cyst Traumatic Bone Cyst* Extravasational Bone Cyst | * is the most common
29
What does the simple bone cyst look like radiographically?
- Unilocular radiolucency with interradicular scalloped superior margins - Usually >10mm and associated with > 1 root apex - Aggressive lesions can be expansive
30
simple bone cyst
31
simple bone cyst
32
What age/gender is the simple bone cyst prevelant?
- age: second decade (usually <25 years) - gender: no predilection
33
What site is a simple bone cyst most common?
Body and ramus of mandible
34
What is the management for the simple bone cyst?
- Initiate bleeding - Recurrence is rare
35
What is a posterior lingual mandibular salivary gland depression (stafne cyst)? | be very familar with this... easy to tell what it is
Asymptomatic, usually found in routine radiographic examinations
36
What does the posterior lingual mandibular salivary gland depression (stafne cyst) look like radiographically?
Well circumscribed posterior radiolucency in molar region between mandibular canal and inferior border
37
posterior lingual mandibular salivary gland depression (stafne cyst)
38
posterior lingual mandibular salivary gland depression (stafne cyst)
39
What age/gender is the posterior lingual mandibular salivary gland depression prevelant?
- adults; prominent over 50 years - almost exclusively male predilection
40
What site is most common to have a posterior lingual mandibular salivary gland depression?
Between the mandibular canal and inferior border
41
What is the management for a posterior lingual mandibular salivary gland depression?
watch it DONT biopsy
42
What is a focal osteoporotic bone marrow defect of the jaws?
* Asymptomatic
43
What does the focal osteoporotic bone marrow defect of the jaws look like radiographically?
* Unilocular, faint radiolucency * Not ragged but difficult to discern as a separate entity
44
What age/gender is the focal osteoporotic bone marrow defect of the jaws prevelant?
- all age - slightly higher in females but no predominant gender
45
What site is focal osteoporotic bone marrow defect of the jaws most commonly found?
Mandible
46
What is the treatment for a focal osteoporotic bone marrow defect of the jaws?
No treatment
47
What is the pathophysiology for a residual/recurrent cyst?
- Results from incomplete removal or residual viable epithelial cystic lining following treatment of a cyst - Previous history of periapical disease
48
What is a residual cyst?
- Asymptomatic, normally found on radiographic examinations of edentulous areas - Tooth or root may or may not be present
49
What does a residual cyst look like radiographically?
* Well defined radiolucency with smooth, round, corticated borders * Usually 5mm or less in diameter * May not be any root present if tooth was previously extracted
50
What age/gender is the residual cyst prevelant?
- middle age or older - more common in males
51
What site is more common to find a residual cyst?
more common in maxilla
52
What is the management for a residual/recurrent cyst?
- Requires removal of the cyst lining - Enucleation if a large cyst - same as a PA cyst
53
What is the pathophysiology of a fibrous healing defect (apical scar)?
* Develops after inflammation that affects the integrity of the periosteum * Once disease is eradicated, the bone heals without a mineralized bony matrix * Due to the loss of the periosteum, only fibrous connective tissue fills the site of the previous disease
54
What is a fibrous healing defect (apical scar)?
* Asymptomatic * Noted in areas with a previous history of disease or trauma
55
What does a fibrous healing defect (apical scar) look like radiographically?
* Well circumscribed radiolucent lesion at site of previous surgery * “punched out” or “see through” appearance * May resemble residual cysts in edentulous areas but lack cortication
56
What is the managment for a fibrous healing defect (apical scar)?
- No treatment indicated - A previous history of disease is critical in establishing the diagnosis
57
What is a neuroma/neurofibroma?
* Expansion, pain, or paresthesia * Symptoms include complaints of burning, tingling, and aching sensations
58
What does a neuroma/neurofibroma look like radiographically?
* Well circumscribed radiolucency of various shapes * In the mandible it usually forms in the mandibular canal
59
What is the management for a neuroma/neurofibroma?
Excision, recurrence is rare
60
Many other odontogenic and non-odontogenic lesions may manifest as solitary “cyst-like” radiolucencies such as...
Odontogenic *Amelobastoma *Central giant cell granuloma *Ossifying fibroma (early stage) Non-odontogenic *Chronic localized Langerhans’ cell disease *Myeloma

Radiographic Interpretation (13 decks)

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