There is a well-defined monolocular scalloped-shape radiolucence with a cortical margin between the root of the 35 and 37 extending from the distal of 35 to the root tip of 37 squeezing along the root outline,measuring approximately 4

1

• There is a well-defined monolocular
  scalloped-shape radiolucence with a cortical
  margin between the root of the 35 and 37
  extending from the distal of 35 to the root tip
  of 37 squeezing along the root outline,measuring
  approximately 4 2 cm in diameter. The involved
  teeth from 35 to 37 are still alive with lamina
  dura.

2
Trauma bone cyst

• well-defined (corticated) radiolucence
• asymptomatic
• beyond 20 years old
• 60 male
• common in the mandibular premolar and molar
  areas
• margin along the root,not push
• vital teeth
• scallop(several teeth)

3
lateral periodontal cyst

• Same--
• male prefer
• asymptomatic
• corticated round radiolucency
• along the lateral root surface
• in alveolar bone
• Different--
• old ages
• often in mandibular premolar-canine-lateral
  incicor area(rarely in molars)
• some are botryoid round lucency(botryoid
  odontogenic cyst)

4
aneurysmal bone cyst(ABC)

• same
• well defined
• unilocular radiolucency
• different
• large blood-filled spaces
• often described as "soap bubble"
• teeth moved and roots resorption

5
odontogenic keratocyst(OKC)

• Same
• scalloping
• asymptomatic
• different
• wide age range
• multiple(about10)
• teeth moved and roots resorption

6
glangular odontogenetic cyst(GOC)

• same
• painless
• scalloping
• different
• usually anterior mandible
• middle aged
• teeth moved and roots resorption