Malignant Lesions Flashcards
T/F: Malignant lesions are often well defined.
False
T/F: Malignancies can cause irregular widening of the PDL.
True
T/F: Malignancies typically resorb the teeth around them.
False
What should you be thinking if teeth appear to be floating in space?
Malignancy
What does it mean for a lesion to be corticated?
It has a very distinct border
What is the only malignancy that will displace teeth?
Leukemia
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
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)
T/F: Any lesion with soft tissue growing into or out of the bone means malignancy.
True
T/F: Malignant lesions have a wide zone of transition.
True
T/F: Malignant tumors have a moth-eaten margin.
True
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
Where are carcinomas typically seen?
Posterior mandible
Describe a Carcinoma lesion?
Radiolucent lesion in the posterior mandible with ill-defined border
T/F: Carcinomas can cause fractures of the mandible.
True
What is the most common malignancy of the bone?
Osteosarcoma
T/F: Osteosarcoma will cause widening of the PDL.
True
What are two key indicators of osteosarcoma?
- PDL widening
2. Sunburst periosteum appearence
Multiple punched-out round radiolucencies in the skull and jaws is indicative of __________.
Multiple myeloma
T/F: Multiple myeloma will usually have ill defined borders.
False
Multiple radiolucencies with well-defined but non corticated borders
__________ is often seen in sights of developing teeth.
Leukemia
T/F: Leukemia is the only malignancy that can displace teeth occlusally.
True
Metastatic lesions from which two regions can look opaque?
Breast and prostate
Which malignancies will most often cause nondirectional root resorption?
Sarcomas and multiple myeloma
T/F: The majority of malignancies are radiolucent.
True
T/F: Malignancies usually have very little discernible trabecular pattern.
True
