1M - BONE SOFT TISSUE

Question 1

Tumors in distal end of the bone

Answer 1

EPIPHYSIS

Chondroblastoma
GCT
Bone cyst

Question 2

Tumors in bone’s growth plate

Answer 2

METAPHYSIS

*Osteoblast
Ostoesarc
Osteochondr
Enchondr
Chondrosarc
*Fibrosarc
SBC
ABC

Question 3

Tumors in the body of the bone

Answer 3

DIAPHYSIS

• Osteoid osteoma
• Adamantinoma
• Fibrous dysplasia
• Fibrosarcoma

Round cell lesions
• Ewing’s sarcoma
• Lymphoma
• Myeloma

Question 4

0-20 y/o

Answer 4

SBC
EW
CB

Question 5

10-20 y/o

Answer 5

NOF

OC

Question 6

30-60 y/o

Answer 6

CS
My
Mets
Chor.

Question 7

50-60 y/o

Answer 7

Mets

Chor.

Question 8

Nature of lesion: bone is eaten up by the lesion

Answer 8

Lytic

Question 9

Nature of lesion: bone formation

Answer 9

Sclerotic

Question 10

Balloon type destruction seen in?

Answer 10

GCT

Chondromyxoid fibroma

Question 11

Soft tissue involvement without destruction seen in?

Answer 11

Round cell tumors

Hematolymphoid tumors

Question 12

Thickening of the edge of the lesion. There is bone formation delimiting the border of the lesion

Answer 12

Sclerotic margin

Question 13

Epiphyseal lesion before growth plate fusion

Answer 13

Chondroblastoma

Question 14

Epiphyseal lesion after growth plate fusion

Answer 14

Giant cell tumor

Question 15

Common location of adamantinoma

Answer 15

Diaphysis of mandible

Question 16

Primary bone tumors are often ___?

A. Solitary
B. Multiple

Answer 16

A. Solitary

Question 17

Multiple bone lesions

Answer 17

o Enchondromas
o Vascular lesion
o Fibrous Dysplasia
o Myeloma
o Metastatic carcinoma

Question 18

Growth pattern:

Well defined lesion

Answer 18

Geographic

Question 19

Geographic pattern

Answer 19

BC
CMF
NOF

Question 20

Growth pattern:

Both medullary and cortical bone: already expanding to the bone itself

Answer 20

Permeative

Question 21

Permeative pattern

Answer 21

High grade malignant neoplasms

Osteomyelitis

Question 22

Growth pattern:

Rapidly growing, aggressive, infiltrative

Answer 22

Moth-eaten

Question 23

Moth-eaten pattern

Answer 23

Osteosarcoma

Blue round cell tumors (Ewing sarcoma)

Question 24

Periosteal reaction:

Laying down of new bone by periosteum; cortex has increased in diameter

Answer 24

Cortical thickening

Question 25

Cortical thickening

Answer 25

Chronic osteomyelitis
Healed trauma
Benign tumor

Question 26

Periosteal reaction:

Periosteal new bone formation coupled with endosteal erosion (thickening + lytic form’n)

Answer 26

Endosteal expansion

Question 27

Endosteal expansion

Answer 27

Lower grade chondrosarcoma

Question 28

Type of matrix:

Ill-defined amorphous densities with haphazard mineralization (cloud like)

Answer 28

OSTEOID

• Malignant osteoid
• Osteosarc

Question 29

Type of matrix:

Focal stippled or flocculent densities or lobulated areas as rings or arcs of calcification

Answer 29

CHONDROID or CARTILAGE

Question 30

Type of matrix:

“ground glass” as small trabeculae of woven bone are scattered

Answer 30

FIBROUS MATRIX