Interpretation

Question 1

Some conditions tend to
occur around crown of
impacted teeth

Answer 1

• Dentigerous cyst
• Cystic Ameloblastoma

Question 2

• Some conditions in missing tooth area :

Answer 2

• Residual cyst

Question 3

– Some conditions around apices on teeth:

Answer 3

Grauloma ,abscess, cyst.

Question 4

Internal structure
• Associated with

Answer 4

Impacted tooth

Question 5

Some conditions tend to occur in a single anatomic site:

Answer 5

• Globulomaxillary cyst
• Incisive canal cyst
Naso alveolar cyst
Median mandibular cyst

Question 6

Some conditions tend to occur Bilaterally:

Answer 6

• Cherubism
• Odontogenic keratocyst

Question 7

Metabolic, systemic or endocrine are

Answer 7

Generalized

Question 8

BELOW inferior dental canal

Answer 8

suggests a Non- Odontogenic,
e.g .,Median mand .,Cyst
Aneurysmal bone cyst

Question 9

WITHIN inferior dental canal

Answer 9

May be vascular or neurogenic in origin or may be the site of initial lesion in Metastatic disease.

Question 10

Above inferior dental canal

Answer 10

a Odontgenic, e.g.,Residual cyst, Dentigerous, Lateral period.cyst

Question 11

SIZE
• Consider the size of the lesion.
• The size may aid in the differential diagnosis .
• e.g.

Answer 11

Dentigerous cyst

Question 12

SHAPE
The lesion may have a particular shape ,or it may be irregular.
Circular,or scalloped . Expansile e.g

Answer 12

Benign (C.G.Granuloma).

Question 13

Well defined margins: means

Answer 13

Slowly growing lesions

Question 14

• Ill defined margins:

Answer 14

• Rapidly growing lesions :an invasive border is associated with rapid growth .e.g. malignant lesions.

Question 15

a blending margin eg

Answer 15

a blending margin is ill defined between normal and abnormal .e.g. Fibrous dysplasia.

Question 16

Punched out with no sclerosis . ( sharp boundary in which no bone reaction adjacent to the abnormality e.g.

Answer 16

Multiple Myeloma

Question 17

Thin condensed sclerotic rim. e.g

Answer 17

late stage of Myxoma.

Question 18

Thick condensed sclerotic rim ( RO line of reactive bone at the periphery e.g.

Answer 18

Cyst

Question 19

Thick diffuse sclerotic rim e.g.

Answer 19

Cementoma

Question 20

Totally R.L e.g.

Answer 20

Cyst

Question 21

Totally R.O e.g.

Answer 21

Salivary gland stones

Question 22

Mixed RL &RO e.g.

Answer 22

Osteomylities

Question 23

A radio opaque lesion may have a soft tissue capsule ,which eg

Answer 23

A radio opaque lesion may have a soft tissue capsule ,which indicated by the presence of a radiolucent line at the periphery.
e.g. Odontomas.

Question 24

• RL
• ROn%
• Mixed

Answer 24

• RL 90%
• RO 2%
• Mixed 8%

Question 25

Honey comb
• Soap bubble seen in

Answer 25

early Stage
• Late stage AB
Aneurysmal bone cyst
Ameloblastoma

Question 26

Tennis racket seen in

Answer 26

Odontogenic myxoma

Question 27

Scalloped seen in

Answer 27

Odontogenic keratocyst
Central giant cell granuloma

Question 28

• Hair on end

Answer 28

Rarely seen in the jaws
• E.g. Sickle cell anemia or • Thalasthemia

Question 29

Ground glass

Answer 29

Fibrous dysplasia

Question 30

Cotton -wool

Answer 30

Pagets disease

Question 31

Displacement :suggest chronicity e.g.

Answer 31

Large Cyst

Question 32

Resorption: suggest

Answer 32

Resorption: suggest slowly growing lesions
• E.g. chronic infection
Garrers osteomyeltitis
Sclerosing osteomyelitis

Question 33

Root inclusion :the lesion go around
the roots e.g.

Answer 33

Root inclusion :the lesion go around
the roots e.g. sq.cell.carcinoma.
• It is affecting on lamina dura causing its thinning or thickening or its absence.

Question 34

Answer 34

Multiple myeloma

Question 35

Time of lesion if present! importance

Answer 35

provide a clue about the nature of the lesion because slow-growing lesions tend to be benign, while fast- growing aggressive lesions are usually malignant.

Question 36

This systematic description of lesions
forms the

Answer 36

This systematic description of lesions
forms the step
diagnosis