Differential Diagnosis: Radiolucent Lesions Flashcards Preview

Oral Pathology Exam 4 > Differential Diagnosis: Radiolucent Lesions > Flashcards

Flashcards in Differential Diagnosis: Radiolucent Lesions Deck (19):
1

What is the Differential Diagnosis of a Periapical RL? (2)

  • PA Granuloma/Cyst
    • Non-vital tooth
    • Lamina dura is gone
    • From Rests of Malassez
  • Apical Scar
    • Area where bone was destroyed and didn't fill in

2

What tooth is most likely to have an Apical Scar?

Maxillary lateral incisor

3

What lesions can fool us into thinking they are Perapical RL? (5)

  • Lateral Periodontal Cyst
  • Odontogenic Keratocyst
  • Langerhans Cell Disease (Eosinophilic Granuloma)
  • Central Giant Cell Granuloma 
  • Cementoma (Periapical COD)

4

Which false PARL are seen in vital teeth?

  • Lateral Periodontal Cyst
    • Diagnostic histo: epithelial plaques = swirled squamous cells
  • CGCG
    • Mandibular Anteriors
    • Young Females 
  • Cementoma - Early Lesion
    • Mandibular Anteriors
    • Black Females > 40 yrs 
    • Can see root outline 

5

How do you differentiate a PARL that appears in the posterior mandible, that erodes bone/"scoops it out"?

  • Adult = OKC
    • Not epicentered, resorbs roots and teeth
  • Young Persons = Eosinophilic Granuloma 
    • ​"teeth floating in air"

6

What is the Differential Diagnosis for Unilocular Pericoronal RL? (8)

"The HOA doesn't like is when my dad drinks CORONA(L) in the garage with the AUDIO loud."

  • Hyperplastic Dental Folicle 
  • Odontogenic Keratocyst
  • Ameloblastic Fibroma
  • Adenoid Odontogenic Tumor
  • Unicystic Ameloblastoma
  • Dentigerous Cyst
  • Intraosseous SCC
  • Odontogenic Mxyoma

7

What is the Differential Diagnosis for a Unilocular Pericoronal RL, that is acting aggressive and resorbing the root?

  • OKC
  • Unicystic AB
  • Odontogenic Myxoma 

8

What is the diagnosis for a Unilocular Pericoronal RL if it is < 4mm?

Hyperplastic Dental Follicle

9

What is the diagnosis for a Unilocular Pericoronal RL if it is > 5mm?

Dentingerous Cyst 

10

Which Unilocular Pericoronal RL is a mixed tumor (2 germ layers), that recurs and can transform?

Ameloblastic Fibroma

11

Which Unilocular Pericoronal RL's most commonly occur in the posterior mandible, around an unerupted 3rd molar? (4)

  • Dentingerous Cyst
  • OKC
    • Adult
  • Unicystic Ameloblastoma
    • Young
  • Ameloblastic Fibroma
    • Young

12

What are the other Unilocular RL's? (10)

"The OTHER UNIformed SHORTIES get BJ's"

  • Surgical Ciliated Cyst
  • Hematopoietic Bone Marrow Defect
  • Ossifying Fibroma
  • Residual Cyst
  • Traumatic Bone Cyst
  • Incisive Canal Cyst
  • Early, Focal COD
  • Schwannoma
  • Buccal Bifurcation Cyst/Paradental Cyst
  • Juvenille Ossifying Fibroma 

13

What is the Differential Diagnosis for a Globulomaxillary RL in a young person? (2)

Young Females

  • Central Giant Cell Granuloma
    • Typically in the anterior mandible assoc with vital teeth
  • Adenomatoid Odontogenic Tumor 
    • Anterior maxillar - impacted canine

14

What is the Differential Diagnosis for a Globulomaxillary RL in an adult? (4)

"GOLD"

  • Glandular Odontogenic Cyst
    • No keratin
    • Prefers anterior 
    • VITAL 
  • Odontogenic Keratocyst
    • ​Rare
  • Lateral Periodontal Cyst
    • Males >40 yrs
    • 25% max incisor area
    • VITAL
  • Desmoplastic Ameloblastoma
    • Ground glass RO, not pure RL

15

What is the Differential Diagnosis for Lytic Destruction of Alveolar Bone (moth-eaten, destroying the crest of the ridge - must biopsy)? (8)

"CLOMPing around will DESTROY your BONES"

  • CGCG
  • Lipid Granuloma
  • Langerhan Cell Ds
  • OKC
  • Osteomyelitis
  • Malignancy
    • SCC
    • Osteo/Chondrosarcoma
    • Lymphoma
    • Metastatic Lesion 
  • Perio Ds
  • Pulse Granuloma

16

What is the Differential Diagnosis for Multilocular RL's? (9)

"I COACH MULTI-ple FAT asses"

  • CGCG
  • OKC
  • AB
  • Central MEC
  • Hemangioma/AV Malformation
  • Myxoma
  • Fibrous Dysplasia
  • Aneurysmal Bone Cyst
  • Traumatic Bone Cyst

17

What is the Differential Diagnosis for Unilocular Bilateral RL's? (8)

  • Mental Foramen
  • Mandibular Foramen
  • Dentigerous Cyst
  • Early, Florid Osseous Dysplasia
    • ​Black Females >20 yrs
    • Above md canal - mand molars
  • Langherhan's Cell Ds
    • Young people
  • Multiple Myeloma
    • Older pts
    • RL, jagged ill-defined margins
  • Stafne Bone Cyst
    • Males >50
    • Below Md Canal
  • Traumatic Bone Cyst
    • Males 10-20
    • Above Md Canal

18

What is the Differential Diagnosis for Multilocular Bilateral RL's? (5)

  • Basal Cell Nevus Syndrome
    • Multiple OKCs
  • Cherubism
    • Giant Cell Lesion of early Childhood
  • Polyostotic Fibrous Dysplasia
    • Incorporates the cortex, margins unclear
  • Hemolytic Anemia - Thalassemia
    • Md develops marrow to produce RBC
  • Multiple Myeloma
    • Multiple RL w/out corticated border

19

What is the Differential Diagnosis for Mixed RL/RO Lesions? (4,5,6)

  • AOT
  • CEOT - Pindborg
  • COC - Gorlin
  • Ameloblastic Fibro-odontoma
  • PA Osseous Dysplasia
  • Florid Osseous Dysplasia
  • Focal Osseous Dysplasia
  • Ossifying Fibroma
  • Fibrous Dysplasia
  • Osteosarcoma/Chondrosarcoma
  • Metastatic Prostate Cancer
  • Osteoblastoma
  • Osteoid Osteoma
  • Cementoblastoma
  • Condensing Osteitis