DIfferential diagnoses:

Question 1

Gingival cyst of the adult:

Answer 1

mucocele, parulis, peripheral odontogenic tumor

Question 2

Periapical cyst:

Answer 2

periapical granuloma, periapical scar, periapical cemneto-osseous dysplasia (early stage), odontogenic tumors, central giant cell lesion, traumatic bone cyst, metastatic lesion

Question 3

Dentigerous cyst:

Answer 3

enlarged dental follicle, ameloblastoma, OKC, AOP

Question 4

Lateral periodontal cyst, unilocular:

Answer 4

Lateral radicular cyst, OKC, odontogenic tumor (ameloblastoma, squamous odontogenic tumor)

Question 5

Multilocular lateral periodontal cyst:

Answer 5

OKC, ameloblastoma, central giant cell lesion,

Question 6

unilocular or multilocular OKC associated with a tooth

Answer 6

dentigerous cyst, ameloblastoma, odontogenic myxoma, AOT, ameloblastic fibroma

Question 7

unilocular or multilocular OKC not associated with a tooth:

Answer 7

Central giant cell lesion, traumatic bone cyst, aneurysmal bone cyst

Question 8

Orthokeratinized odontogenic cyst:

Answer 8

dentigerous cyst, OKC, ameloblastic fibroma, amelobastoma

Question 9

Granular Odontogenic cyst:

Answer 9

central giant cell lesion, ameloblastoma

Question 10

Calcifying Odontogenic Cyst (Gorlin’s Cyst), RL:

Answer 10

dentigerous cyst, OKC, Ameloblastoma

Question 11

Calcifying Odontogenic Cyst (Gorlin’s Cyst), mixed:

Answer 11

AOT, CEOT, Odontoma, `Ameloblastic fibroma

Question 12

Calcified lymoh nodes:

Answer 12

sialolith, phlebolith

Question 13

tonsilolith:

Answer 13

sialolith, phlebolith, cetral bone lesion

Question 14

arterial calcification (atheroma):

Answer 14

Triticeous cartilage more and medial and oval to calcified carotid

Question 15

Elongation of the styloid process or mineralization of the styloid ligament complex:

Answer 15

none

Question 16

Phlebolith:

Answer 16

sialolith, calcified lymph nodes

Question 17

Chondrosarcoma:

Answer 17

chondroblastic osteosarcoma, chondroma, synovial chondromatosis involving the TMJ

Question 18

Ewing’s sarcoma:

Answer 18

Metastatic neuroblastoma, Burkitt’s lymphoma, Osteosarcoma, Non-Hodgkins lymphoma, Garre’s osteomyelitis

Question 19

Plasmactyome and MM:

Answer 19

metastatic carcinmoma, Lymphoma, Osteomyelitus, Langerhans cell histiocytosis

Question 20

Burkitt’s Lymphoma:

Answer 20

Metastatic neuroblastoma, Osteosarcoma, Osteomyelitis, Non-hodgkin’s lymphoma, Ewing’s sarcoma, (NOT LANGERHAN’S)

Question 21

Exostoses:

Answer 21

Osteoma

Question 22

Osteoma:

Answer 22

Exostosis, Compex odontoma, focal sclerosing osteomyelitis, osteoid osteoma,osteoblastoma, ossifying fibroma

Question 23

Solitary multilocular RL, CGCG:

Answer 23

Ameloblastoma, Odontogenic myxoma, odontogenic keratocyst, aneurysmal bone cyst

Question 24

Solitary unilocular RL, CGCG:

Answer 24

cystic processes of the jaw

Question 25

CGCG is microscopically identical to:

Answer 25

Bown tumor of primary hyperparathyroidism

Question 26

Central hemangioma:

Answer 26

Ameloblastic fibroma, aneurysmal bone cyst, odontogenic keratocyst, ameloblastoma, odontogenic myxoma, CGCG

Question 27

Osteoblasto:

Answer 27

Cementoblastoma, Osteoma, Ossifying fibroma, Fibrous dysplasia

Question 28

Monostotic Fibrous Dysplasia:

Answer 28

Ossifying fibroma, Chronic Osteomylitis, Paget’s Disease

Question 29

Ossifying fibroma:

Answer 29

Fibrous dysplasia, osteoblastoma, osteoid osteoma, cementoblastoma, focal sclerosing osteomyelitus

Question 30

Focal cemento-osseaou dysplasia, non vital, no growth:

Answer 30

okc, ameloblastoma, traumatic bone cyst

Question 31

Focal cemento-osseaou dysplasia, non vital, w growth:

Answer 31

cystic lesion,

Question 32

Late state Florid cement-osesous dysplasia:

Answer 32

Paget’s disease (this has expansion, FCOD doesn’t)

Question 33

One quadrant that looks like Florid cement-osseous dysplasia:

Answer 33

diffuse sclerosing osteomyelitis

Question 34

Cemento-osseous dysplasia, RL stage:

Answer 34

Periapical granuloma, Periapical cyst, residual cyst, chronic osteomyelitis, ossifying fibroma (early)

Question 35

Cemento-osseous dysplasia, mixed stage:

Answer 35

Ossifying fibroma, chronic osteomyelitis, odontogenic tumor

Question 36

Cemento-osseous dysplasia, Ro stage:

Answer 36

complex odontoma, condensing osteitis (focal sclerosing osteomyelitis)

Question 37

Langerhans Cell Histiocytosis:

Answer 37

juvenille perio, DM, Hypophosphatasia, C=yclic neutropenia, agranulocytosis, osteomyelitis, MM, metastatic lesion, odontogenic tumor, odontogenic cyst