RADIOGRAPHIC PATHOLOGY
UNILOCULAR RADIOLUCENCIES: PERICORONAL LOCATION (FCOA) correct
answers HYPERPLASTIC DENTAL FOLLICLE: < 5 mm in thickness
DENTIGEROUS CYST: > 5 mm in thickness
ODONTOGENIC KERATOCYST
AMELOBLASTOMA: Usually unicystic type
OTHER ODONTOGENIC LESIONS: Examples: calcifying epithelial odontogenic tumor,
odontogenic myxoma, central odontogenic fibroma.
UNILOCULAR RADIOLUCENCIES: PERIAPICAL LOCATION (GCCA) correct answers
PERIAPICAL GRANULOMA: Nonvital tooth.
PERIAPICAL CYST: Nonvital tooth.
PERIAPICAL CEMENTO-OSSEOUS DYSPLASIA (early): Especially in black females;
usually with apical to mandibular anteriors; teeth are vital.
AMELOBLASTOMA: Especially unicystic type.
MULTILOCULAR RADIOLUCENCIES (MACCHO) correct answers MYXOMA
AMELOBLASTOMA: Especially in posterior mandible; often associated with impacted
tooth.
CENTRAL GIANT CELL GRANULOMA: Especially in anterior mandible.
CHERUBISM: Hereditary; onset in childhood; multiple quadrants involved.
HEMANGIOMA
ODONTOGENIC KERATOCYST (OKC)
RADIOLUCENCIES: POORLY DEFINED OR RAGGED BORDERS correct answers
PERIAPICAL GRANULOMA OR CYST: Nonvital tooth.
HEMATOPOIETIC BONE MARROW DEFECT: Especially edentulous areas in posterior
mandible; more common in females.
OSTEOMYELITIS: Usually painful or tender
TRAUMATIC BONE CYST: Mandibular lesion that scallops up between roots of teeth;
usually in younger patients.
METASTATIC TUMORS: Painful; parasthesia; usually in older adults.
RADIOLUCENCIES: MULTIFOCAL OR GENERALIZED correct answers CEMENTO-
OSSEOUS DYSPLASIA: Teeth still Vital.
Unilocular radiolucencies - other locations correct answers Lateral radicular cyst
Nonvital pulp; lateral canal
Residual (periapical) cyst
Odontogenic keratocyst
Central giant cell lesion--Esp. anterior mandible
Stafne bone defect--Angle of mandible below mandibular canal
UNILOCULAR RADIOLUCENCIES: PERICORONAL LOCATION (FCOA) correct
answers HYPERPLASTIC DENTAL FOLLICLE: < 5 mm in thickness
DENTIGEROUS CYST: > 5 mm in thickness
ODONTOGENIC KERATOCYST
AMELOBLASTOMA: Usually unicystic type
OTHER ODONTOGENIC LESIONS: Examples: calcifying epithelial odontogenic tumor,
odontogenic myxoma, central odontogenic fibroma.
UNILOCULAR RADIOLUCENCIES: PERIAPICAL LOCATION (GCCA) correct answers
PERIAPICAL GRANULOMA: Nonvital tooth.
PERIAPICAL CYST: Nonvital tooth.
PERIAPICAL CEMENTO-OSSEOUS DYSPLASIA (early): Especially in black females;
usually with apical to mandibular anteriors; teeth are vital.
AMELOBLASTOMA: Especially unicystic type.
MULTILOCULAR RADIOLUCENCIES (MACCHO) correct answers MYXOMA
AMELOBLASTOMA: Especially in posterior mandible; often associated with impacted
tooth.
CENTRAL GIANT CELL GRANULOMA: Especially in anterior mandible.
CHERUBISM: Hereditary; onset in childhood; multiple quadrants involved.
HEMANGIOMA
ODONTOGENIC KERATOCYST (OKC)
RADIOLUCENCIES: POORLY DEFINED OR RAGGED BORDERS correct answers
PERIAPICAL GRANULOMA OR CYST: Nonvital tooth.
HEMATOPOIETIC BONE MARROW DEFECT: Especially edentulous areas in posterior
mandible; more common in females.
OSTEOMYELITIS: Usually painful or tender
TRAUMATIC BONE CYST: Mandibular lesion that scallops up between roots of teeth;
usually in younger patients.
METASTATIC TUMORS: Painful; parasthesia; usually in older adults.
RADIOLUCENCIES: MULTIFOCAL OR GENERALIZED correct answers CEMENTO-
OSSEOUS DYSPLASIA: Teeth still Vital.
Unilocular radiolucencies - other locations correct answers Lateral radicular cyst
Nonvital pulp; lateral canal
Residual (periapical) cyst
Odontogenic keratocyst
Central giant cell lesion--Esp. anterior mandible
Stafne bone defect--Angle of mandible below mandibular canal
