Malignant Lesions Flashcards Preview

SP18: Oral Radiology > Malignant Lesions > Flashcards

Flashcards in Malignant Lesions Deck (26):
1

T/F: Malignant lesions are often well defined.

False

2

T/F: Malignancies can cause irregular widening of the PDL.

True

3

T/F: Malignancies typically resorb the teeth around them.

False

4

What should you be thinking if teeth appear to be floating in space?

Malignancy

5

What does it mean for a lesion to be corticated?

It has a very distinct border

6

What is the only malignancy that will displace teeth?

Leukemia

7

What is the difference between the way benign tumors act on roots and malignant tumors?

Benign - either displace or directionally resorb

Malignant - irradically/nondirectionally resorb

8

What is the most common interaction between a malignancy and the periosteal bone?

The malignancy will just go right through and destroy it

Sometimes malignancies will cause periosteal regrowth at right angles to the normal bone (sunburst)

9

T/F: Any lesion with soft tissue growing into or out of the bone means malignancy.

True

10

T/F: Malignant lesions have a wide zone of transition.

True

11

T/F: Malignant tumors have a moth-eaten margin.

True

12

T/F: With most cancers, if the patient is cancer free for five years there is not likely to be metastasis to the jaw.

True

Breast cancer is exception

13

Where are carcinomas typically seen?

Posterior mandible

14

Describe a Carcinoma lesion?

Radiolucent lesion in the posterior mandible with ill-defined border

15

T/F: Carcinomas can cause fractures of the mandible.

True

16

What is the most common malignancy of the bone?

Osteosarcoma

17

T/F: Osteosarcoma will cause widening of the PDL.

True

18

What are two key indicators of osteosarcoma?

1. PDL widening
2. Sunburst periosteum appearence

19

Multiple punched-out round radiolucencies in the skull and jaws is indicative of __________.

Multiple myeloma

20

T/F: Multiple myeloma will usually have ill defined borders.

False

Multiple radiolucencies with well-defined but non corticated borders

21

__________ is often seen in sights of developing teeth.

Leukemia

22

T/F: Leukemia is the only malignancy that can displace teeth occlusally.

True

23

Metastatic lesions from which two regions can look opaque?

Breast and prostate

24

Which malignancies will most often cause nondirectional root resorption?

Sarcomas and multiple myeloma

25

T/F: The majority of malignancies are radiolucent.

True

26

T/F: Malignancies usually have very little discernible trabecular pattern.

True