Oral Path Exam 2 - Mixed Lesions and Radiolucent or Mixed Lesions Part 2 (Malignancies)

Question 1

What type of lesion?

Histologically identical to cementoblastoma but NOT fused to root

Answer 1

Osteoblastoma

Question 2

What type of lesion?

Most patients are under 30
Dull pain + expansion are common

Answer 2

Osteoblastoma

Question 3

What type of lesion?

2-4 cm, up to 10 cm

Answer 3

Osteoblastoma

Question 4

What type of lesion?

Well- or ill-defined radiolucency w/ patchy to diffuse mineralization (mixed)

Answer 4

Osteoblastoma

Question 5

What type of lesion?

Tx = local excision or curettage

Answer 5

Osteoblastoma

Question 6

Does osteoblastoma have a poor or good prognosis?

Answer 6

Good

Question 7

What type of lesion?

Malignancy showing malignant mesenchymal cells producing osteoid

Answer 7

Osteosarcoma

Question 8

What type of lesion?

Most common primary bone malignancy (twice as common as chondrosarcoma)

Answer 8

Osteosarcoma

Question 9

What type of lesion?

Fast growing mass around knees in children and young adults; only 6% of these affect the jaws

Answer 9

Osteosarcoma

Question 10

What type of lesion?

Some cases arise in Paget Disease of bone or radiated bone

Answer 10

Osteosarcoma

Question 11

What type of lesion?

Initial complaint is pain, followed by swelling, loose teeth, or paresthesia

Answer 11

Osteosarcoma

Question 12

What type of lesion?

Mixed lesion with ill-defined borders
Symmetric widening of PDLs

Answer 12

Osteosarcoma

Question 13

What type of lesion?

Growth of bone above crestal height
“Sun burst” pattern is NOT common in jaws

Answer 13

Osteosarcoma

Question 14

What type of lesion?

Tx = wide surgical resection w/ initial complete removal being the most important prognostic factor

Answer 14

Osteosarcoma

Question 15

What is the most important prognostic factor of osteosarcoma in the jaws?

Answer 15

Wide surgical resection w/ initial complete removal

Question 16

What type of lesion?

Metastasizes to lungs and brain

Answer 16

Osteosarcoma

Question 17

What type of lesion?

Death is due to uncontrolled local disease, tumor infiltrates beyond radiographic margins

Answer 17

Osteosarcoma

Question 18

What is the most common cancer involving bone?

Answer 18

Metastatic carcinoma

Question 19

What is occasionally affected in metastatic disease?

Answer 19

Jaw (mostly posterior mandible)

Question 20

In metastatic disease, metastatic deposits from malignancies below the ________ may affect the jaws through Batson’s paravertebral plexus of veins - no valves

Answer 20

neck

Question 21

In metastatic disease, over half of affected patients are over _______ years of age

Answer 21

50

Question 22

Name the most common soft tissue affected by metastatic disease

Answer 22

Gingiva

Question 23

What does gingiva affected by metastatic disease resemble?

Answer 23

Pyogenic granuloma

Question 24

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