Oral Path Exam 1 - Bone Lesion Description

Question 1

What is the mnemonic for approaching bone lesion descriptions?

Answer 1

New students see past description loving education

Number
Size
Shape
Periphery
Density
Location
Effect on surrounding structures

Question 2

This shape often occurs in cysts and benign neoplasms

Answer 2

Round and unilocular

Question 3

Contiguous arcs or semicircles representing bone ridges around roots, within bone or cortices (not septa as seen in multilocular lesions)

Answer 3

Scalloped

Question 4

Shape seen in cysts, cyst-like lesions, and some benign neoplasms

Answer 4

Irregular (scalloped) and unilocular

Question 5

Two or more radiolucent compartments divided by septations (internal striations of bone)

Answer 5

Multilocular

Question 6

Shape seen in radiolucent and mixed lesions, but NOT used to describe radiopaque lesions

Answer 6

Multilocular

Question 7

Thin, uniform, radiopaque line of bone at the periphery of a lesion

Answer 7

Corticated

Question 8

Distinct radiolucent rim (nonmineralized “soft tissue”) around a radiopaque region (mixed lesion)

Answer 8

Radiolucent “soft tissue” periphery

Question 9

Gradual and wide transition between abnormal (but uniform pattern) and normal trabeculae

Answer 9

Blending

Question 10

Irregular bone destruction (radiolucent or mixed) with a haphazard transition to normal trabeculae (occurs in malignancies
and infection)

Answer 10

Ill-defined

Question 11

Other descriptors are moth-eaten, ragged, or diffuse

Answer 11

Ill-defined

Question 12

What measurements should you use when describing size?

Answer 12

mm or cm