Chapter 14 lecture 2

Question 1

What is a diverse group of processes characterized by replacement of normal bone by fibrous tissue containing a mineralized product?

Answer 1

-Fibro-Osseous lesions

Question 2

What are some examples of benign fibro-osseous lesions?

Answer 2

• Fibrous dysplasia
• Cemento-osseous dysplasia
• Ossifying fibroma

Question 3

What is characterized by replacement of normal bone by fibrous connective tissue intermixed with bone that is a sporadic condition resulting from a postzygotic mutation?

Answer 3

-Fibrous dysplasia

Question 4

What is the chief radiographic feature of fibrous dysplasia?

Answer 4

-Fine ground glass opactification

Question 5

What are the two syndromes found in the polyostotic fibrous dysplasia?

Answer 5

• Jaffe-Lichtenstein syndrome

- McCune-Albright Syndrome

Question 6

What is the most common type of fibrous dysplasia?

Answer 6

-Monostotic in the maxilla

Question 7

When is monostotic fibrous dysplasia usually diagnosed?

Answer 7

-Teenage years

Question 8

What is the most common feature of monostatic fibrous dysplasia?

Answer 8

-Slowly growing swelling of the affected area

Question 9

What do you see in Jaffe-Lichtenstein syndrome?

Answer 9

• Polyostotic fibrous dysplasia

- Cafe au lait spots (Coast of Maine)

Question 10

What do you see in McCune-Albright syndrome?

Answer 10

• Polyostotic fibrou dysplasia
• Cafe au laite spots (Coast of maine)
• Multiple endocrinopathies

Question 11

Where does cemento-osseous dysplasia occur?

Answer 11

-Tooth bearing areas of the Jaw

Question 12

What is the most common fibro-osseous lesion encountered in clinical practice?

Answer 12

-Cemento-Osseous dysplasia

Question 13

What are the three types of cemento-osseous dysplasia?

Answer 13

• Focal
• Periapical
• Florid

Question 14

What does focal-Cemento-osseous dysplasia exhibit?

Answer 14

-Single sight of involvement

Question 15

Where is the most common place of focal cemento-osseous dysplasia?

Answer 15

-Posterior mandible

Question 16

Who do you see periapical cemento-osseous dysplasia in?

Answer 16

-Female African americans around 40

Question 17

Where do you see periapical cemento-osseous dysplasia?

Answer 17

-Periapical region of the anterior mandible

Question 18

What is florid cemento-osseous dysplasia?

Answer 18

-Multiple focal involvement not limited to the anterior mandible

Question 19

Is cemento-osseous dysplasia symptomatic?

Answer 19

-No

Question 20

Who do you see florid cemento-osseous dysplasia in?

Answer 20

-Female African Americans

Question 21

What might extraction of a tooth in a person with florid COD lead to?

Answer 21

-Necrosis

Question 22

What type of cemento-osseous dysplasia do you biopsy?

Answer 22

-Focal

Question 23

What is an ossifying fibroma?

Answer 23

-True neoplasm with significant growth potential

Question 24

What do early lesions of Cemento-osseous dysplasia appear as?

Answer 24

Radiolucent

Question 25

What do middle lesions of cemento-osseous dysplasia appear as?

Answer 25

-Radiolucent with Radioopacitiy

Question 26

What has large ossifying fibromas of the mandible demonstrate a characteristic downward bowing of the inferior cortex of the mandible?

Answer 26

-Ossifying fibroma

Question 27

How do you distinguish between juvenile ossifying fibroma from an ossifying fibroma?

Answer 27

- Age of patient - Most common sites of involvement - Clinical behavior

Question 28

Where does juvenile ossifying fibromas occur more commonly?

Answer 28

-Maxilla

Question 29

Who does juvenile ossifying fibromas occur more commonly in?

Answer 29

-Males

Question 30

Where does ossifying fibromas occur more commonly?

Answer 30

-Mandible

Question 31

Who does ossifying fibromas occur more commonly in?

Answer 31

-Females

Question 32

What is an osteoma?

Answer 32

-Benign tumors of mature bone

Question 33

Where is an osteoma restricted to?

Answer 33

-Craniofacial skeleton

Question 34

Where does osteoma arise on?

Answer 34

-Surface of bone or within medullary bone

Question 35

T/F Osteomas exhibit continued growth

Answer 35

True

Question 36

What characterizes Gardner syndrome?

Answer 36

- Clonic polyps - Skeletal abnormalities - Dental abnormalities - Epidermoid cysts - Dermoid tumors - Thyroid carcinoma - Pigmented lesions of the ocular fundus

Question 37

In Gardner syndrome what will bowel polyps transform into?

Answer 37

-Adenocarcinoma

Question 38

What skeletal abnormalities do you most commonly see in Gardner syndrome?

Answer 38

-Osteomas

Question 39

What dental abnormalities do you see in Gardner syndrome?

Answer 39

- Supernumerary teeth - Impacted teeth - Odontomas

Question 40

What treatment do you need to do in Gardner syndrome?

Answer 40

-Prophylactic colectomy

Question 41

What are closely related benign bone tumors?

Answer 41

- Osteoblastoma | - Osteoid Osteoma

Question 42

What does osteoid osteoma produce?

Answer 42

-Prostaglandins

Question 43

What is the pain relieved by in osteoid osteoma?

Answer 43

-Aspirin

Question 44

What are the size of osteoid osteomas?

Answer 44

-Smaller than 2 cm

Question 45

What are the size of osteoblastomas?

Answer 45

-Larger than 2 cm

Question 46

T/F Osteoblastomas are painful

Answer 46

True

Question 47

What type of pain do you see in osteoid osteoma?

Answer 47

-Nocturnal

Question 48

What is a cementoblastoma?

Answer 48

-Odontogenic neoplasm of cementoblasts

Question 49

Where do most cementoblastomas occur?

Answer 49

-Mandible in the molar/premolar region

Question 50

If you can see the root outline/PDL in the radioopacity will it be a cementoblastoma?

Answer 50

-No

Question 51

What is a chondroma?

Answer 51

-Benign tumor of cartilage

Question 52

T/F Synovial chondromatosis is a rare, benign , non neoplastic tumor

Answer 52

True

Question 53

Where does synovial chondromatosis most commonly affect?

Answer 53

-Large joints but can affect the TMJ

Question 54

What are some common features of synovial chondromatosis?

Answer 54

- Swelling - Pain - Crepitus - Limitation of motion

Question 55

What do you see in an XRAY in someone with synovial chondromatosis?

Answer 55

-Loose bodies

Question 56

What is an osteosarcoma?

Answer 56

-Mesenchymal malignancy

Question 57

If you exclude hematopoietic neoplasma what is the most common type of malignancy to originate within bone?

Answer 57

-Osteosarcoma

Question 58

Whais the most common malignancy of bone?

Answer 58

-Metastatic disease

Question 59

Extragnathic osteosarcomas have a bimodal age distrubution, when does it occur?

Answer 59

- 10-20 yrs most common | - After 50

Question 60

What is the most common place for osteosarcomas to arise in young pts?

Answer 60

- Distal femur | - Proximal tibia

Question 61

When do ostosarcomas of the jaw occur?

Answer 61

-around age 33

Question 62

In an XRAY you see a sunburst appearance, what should you be thinking of?

Answer 62

-Osteosarcoma

Question 63

A triangular elevation of periosteum associated with osteosarcoma is termed what?

Answer 63

-Codman's triangle

Question 64

Root resorption which is termed spiking resorption is associated with what?

Answer 64

-Osteosarcoma

Question 65

What is a Juxtacortical osteosarcoma aka?

Answer 65

-Peripheral osteosarcoma

Question 66

What is a chondrosarcoma?

Answer 66

-Malignant bone tumor of cartilage

Question 67

What is ewing sarcoma?

Answer 67

-Primary malignant tumor of bone

Question 68

What is the 3rd most common osseous neoplasm?

Answer 68

-Ewing sarcoma

Question 69

If you see the onionskin in an XRAY what are you thinking of?

Answer 69

-Ewing sarcoma

Question 70

What is the most common form of cancer involving bone?

Answer 70

-Metastatic tumor

Question 71

What are the most common origins of Gnathic mets?

Answer 71

- Breast - Lung - Thyroid - Prostate - Kidney

Question 72

What is a numb-chin syndrome associated with?

Answer 72

-Metastatic tumor

Question 73

If you see the moth-eaten feature in an XRAY what are you thinking?

Answer 73

-Metastatic tumor