Benign Bone Tumors

Question 1

What is the MC BBT of the appendicular skeleton

Answer 1

Osteochondroma

Question 2

Coat hanger exostosis indicates

Answer 2

Osteochondroma

Question 3

Hereditary multiple exostosis is aka

Answer 3

multiple osteochondromas

Question 4

Age range for most osteochondromas

Answer 4

<20yrs

Question 5

Unicameral Bone cysts aka

Answer 5

simple bone cyst, solitary bone cyst

Question 6

Fallen fragment sign is associated with

Answer 6

SBC

Question 7

Location of a Simple Bone cyst

Answer 7

diaphyseal/metaphyseal located, CENTRALLY located

Question 8

Age range for most SBC

Answer 8

<20yrs

Question 9

Location of an ABC

Answer 9

diaphyseal/metaphyseal, ECCENTRICALLY located

Question 10

Age range of ABC

Answer 10

<20yrs

Question 11

a lytic soap bubble appearance indicates

Answer 11

ABC

Question 12

Giant cell tumor location

Answer 12

diaphyseal/metaphyseal

Question 13

Age range for Giant cell tumor

Answer 13

20-40

Question 14

What bones does GCT MC affect

Answer 14

Long bones 80% of the time

Question 15

Location of Chondroblastoma

Answer 15

epiphyseal/metaphyseal

Question 16

Age range of Chondroblastomas

Answer 16

<20

Question 17

Chondroblastoma is what kind of lesion

Answer 17

Eccentric, lytic

Question 18

What kind of margins does a chondroblastoma have

Answer 18

WELL DEFINED sclerotic margin

Question 19

BBT relieved by aspirin at night

Answer 19

osteoid osteoma

Question 20

This BBT has a central nidus and severe reactive sclerosis

Answer 20

Osteoid osteoma

Question 21

Double density sign is associated with

Answer 21

osteoid osteoma

Question 22

How to locate a osteoid osteoma

Answer 22

CT scan

Question 23

Brodie’s abscess mimics

Answer 23

osteoid osteoma because night pain relieved with aspirin

Question 24

MC BBT of the hand

Answer 24

Enchondroma

Question 25

What is multiple enchondromas called

Answer 25

Ollier's disease

Question 26

Maffucci's syndrome is

Answer 26

Ollier's disease with soft tissue calcification

Question 27

MC BBT of the spine

Answer 27

Hemangioma

Question 28

Vertical striations like accordion/corduroy cloth/honeycomb appearance indicates

Answer 28

hemangioma

Question 29

A round or oblong bone island is called

Answer 29

Enostoma

Question 30

What is osteopoikilosis

Answer 30

multiple bone islands

Question 31

Osteoblastoma MC affects the

Answer 31

neural arch

Question 32

appearance of an osteoblastoma

Answer 32

looks blastic, increase in matrix calcification

Question 33

MC BBT to affect skull

Answer 33

osteoma

Question 34

What view is best for finding an osteoma in the skull

Answer 34

Caldwell projections

Question 35

Rind sign indicates

Answer 35

Fibrous Dysplasia

Question 36

Saber Shin tibia

Answer 36

Fibrous Dysplasia

Question 37

Sheppard's Crook

Answer 37

Fibrous Dysplasia

Question 38

Ground glass appearance

Answer 38

Fibrous Dysplasia

Question 39

"café au lait" spots

Answer 39

Fibrous Dysplasia

Question 40

Coast of Maine appearance

Answer 40

Fibrous Dysplasia

Question 41

Neurofibromatosis is

Answer 41

familial history, patient may present with scoliosis, cervical kyphosis, vertebral body scalloping with IVF enlargement