Tumors

Question 1

Most common epithelial Odontogenic tumor

Answer 1

Ameloblastoma

Question 2

Most common site for Ameloblastoma

Answer 2

Mandibular molar ramus area, can be associated with impacted teeth

Question 3

Slow growing, painless and capable of causing large facial deformities

Answer 3

Ameloblastoma

Question 4

Types of Ameloblastoma

Answer 4

Multicystic
Unicystic
Peripheral or extraosseous

Question 5

Multilocular radiolucencies with well defined sclerotic margins - soap bubble or honey comb

Answer 5

Multicystic Ameloblastoma

Question 6

Superficial saucerization of cortical plate, cup shaped radiolucency beneath elevated nodule

Answer 6

Peripheral or extraosseous ameloblastoma

Question 7

Most common microscopic patterns of ameloblastoma

Answer 7

Follicular and plexiform

Question 8

Tx if ameloblastoma

Answer 8

Simple Enucleation or en bloc / marginal resection

Question 9

True mixed tumor epithelium and connnective tissue

Answer 9

Ameloblastic Fibroma

Question 10

Mixed tumor similar to ameloblastic fibroma but contains odontoma

Answer 10

Ameloblastic Fibroma-odontoma

Question 11

Molar ramus region, slow painless swelling, impacted molars, unilocular or multilocular radiolucent lesions with scalloped margins may contain calcified opaque structures

Answer 11

Pindborg tumor/ calcifying epithelial Odontogenic tumor

Question 12

Sheets of large polygonal epithelial cells within connective tissue stroma with areas of amyloid that have concentric deposits, Liesegang rings

Answer 12

Pindborg tumor/ calcifying epithelial Odontogenic tumor

Question 13

Females, 10-19 in anterior maxilla, asymptomatic tumor

Answer 13

Adenomatoid odontogenic tumor

Question 14

Unilocular radiolucency surrounding unerupted canine crown, extends past CEJ

Answer 14

Adenomatoid Odontogenic tumor

Question 15

Completely radiolucent but with fine snowflake calcifications, ductlike structures surrounded by thick fibrous capsule

Answer 15

Adenomatoid Odontogenic tumor

Question 16

Agressive intraosseous lesion arising from odontogenic mesenchyme from dental pulp or follicular connective tissue

Answer 16

Odontogenic myxoma

Question 17

Painless, slowly enlarging swelling, cortical expansion, teeth displacemeny and root resorption

Answer 17

Odontogenic myxoma

Question 18

Unilocular or multilocular, margins irregular or scalloped, thin wispy trabeculae which gives soap bubble or tennis racket appearance

Answer 18

Odontogenic myxoma

Question 19

Haphazardly arranged stellate, spindle shaped, round cells, loose myxoid stroma only few collagen fibrils

Answer 19

Odontogenic myxoma

Question 20

Odontogenic tumor, proliferation of cementoblasts that form large mass o cementum and cementum like tissue

Answer 20

Cementoblastoma

Question 21

Proliferation of cementum, pain and swelling, teeth vital, mand 1st molar, radiopaque mass with thin radiolucent rim

Answer 21

Cementoblastoma

Question 22

Most common Odontogenic mixed tumor

Answer 22

Odontoma

Question 23

Hamartomatous lesion found over unerupted teeth containing enamel, dentin, pulp in either tooth shapes(compound) or solid, gnarled mass(complex)

Answer 23

Odontoma

Question 24

Asymptomatic non neoplastic bony growth covered by normal mucosa

Answer 24

Tori mandibularis

Question 25

Tumor like lesion, replacement of medullary bone by cellular fibrous connective tissue causing the bone to become fragile

Answer 25

Fibrous Dysplasia

Question 26

Expansion of bone, displaces maxillary sinus and obliterate it

Answer 26

Fibrous dysplasia

Question 27

Types of fibrous dysplasia

Answer 27

Monosyotic Polyostotic

Question 28

Alkaline phosphatase level increased in which type of fibrous dysplasia

Answer 28

Polyostotic fibrous dysplasia

Question 29

Painless, unilateral swelling, ground glass, orange peel or finger print appearance

Answer 29

Fibrous dysplasia

Question 30

Mandibular bucco lingual expansion, bulging of inferior border, ill defined lamina dura that blends with abnormal bone

Answer 30

Fibrous Dysplasia

Question 31

Irregular shaped trabeculae of woven bone in fibrous connective tissue - Chinese characters

Answer 31

Fibrous dysplasia

Question 32

Genetic disorder severe polyostotic fibrous dysplasia, unilateral cafe au lait spots, endocrine abnormalities

Answer 32

McCune Albright syndrome

Question 33

Multiple, slow growing painless expansile bone lesions causes pathological fractures, premature puberty in females

Answer 33

McCune Albright syndrome

Question 34

Connective tissue stroma with irregular woven immature bone. As ut matures more calcified structures

Answer 34

Ossifying fibroma

Question 35

Benign fibro-osseous lesion of jaw arising from undifferentiated cells from PDL. Usually arise from tooth bearing areas

Answer 35

Ossifying fibroma

Question 36

Reactive lesion to local factors, apex of vital teeth, mandibular anteriors periapical, asymptomatic, middle aged women, aftican. Osteolytic, cementoblastic, mature stage

Answer 36

Periapical cemento osseous dysplasia

Question 37

Rare benign tumor of bone arising from osteoblasts, fast onset

Answer 37

Osteoblastoma

Question 38

Well or ill defined round to oval radiolucency with areas of remineralization

Answer 38

Osteoblastoma

Question 39

Colorectal polyps that become adenocarcinoma by fifth decade of life

Answer 39

Gardner’s syndrome

Question 40

Multiple osteomas, Fibromas of skin, epidermal and trichilemmal cysts, abnormalities of the retina of eye

Answer 40

Gardener’s Syndrome

Question 41

Multiple odontomas, multiple impacted and supernumerary teeth. Multiple jaw osteomas cotton wool appearance

Answer 41

Gardner’s syndrome

Question 42

Benign, jaw, young females, anterior to molars, crosses midline, asymptomatic expansile

Answer 42

Central giant cell granuloma

Question 43

Multilocular or Unilocular well demarcated but non corticated. Spindled fibroblasts and multinucleated giant cells in a stroma of collagen

Answer 43

Central giant cell granuloma

Question 44

Tx of central giant cell granuloma

Answer 44

Curettage, steroid, calcitonin injections, interferon injections and bisphosphonates

Question 45

Clonal proliferation of cells phenotypic characteristics of Langerhans cells

Answer 45

Langerhans cell disease

Question 46

Floating in space. Most common form of landerhans cell disease

Answer 46

Eosinophilic granuloma/ chronic localized form Solitary or multiple bone lesions without visceral involvement

Question 47

Chronic disseminating form of Langerhans cell disease with bone, skin and visceral organ involvement

Answer 47

Hand-Schuller-Christian syndrome

Question 48

Lytic bone lesions, exophthalmos, Diabetes Insipidus

Answer 48

Chronic disseminating form of langerhans cell disease/ Hand-Schuller-Christian syndrome

Question 49

Multiple radiolucent lesions, punched out, scooped out, floating in air, severe bone destruction, loose teeth, premature exfoliation, multinucleated giant cells, birbeck granules

Answer 49

Langerhans cell disease