Second half-tumors and tumor-like conditions

Question 1

Name for rare benign bone tumor with unlimited growth potential?

Answer 1

osteoblastoma

Question 2

What are the clinical features for osteoblastoma?

Answer 2

dull pain of insidious onset, worse at night in some localized swelling and tenderness decreased ROM painful scoliosis

Question 3

Where do osteoblastomas mostly occur?

Answer 3

in the spine (also long bones and small bones of the feet)

Question 4

Patient has dull pain of insidious onset and decreased ROM

Answer 4

osteoblastoma

Question 5

This area of the patient is tender to touch and pressure which is worse at night and decreases with activity. Aspirin gives relief in 20-30 minutes.

Answer 5

osteoid osteoma

(two O’s=pop 2 aspirin)

Question 6

What tumor gives a double density sign on a bone scan?

Answer 6

osteoid osteoma

Question 7

For precise detection and localization of a nidus associated with osteoid osteoma, what modality would you use?

Answer 7

CT

Question 8

A benign tumor arising in membranous bone (skull).

Answer 8

osteoma

commonly found in adulthood

Question 9

What tumor is associated with Gardner’s syndrome?

Answer 9

osteoma

Question 10

Fallen fragment sign

Answer 10

SBC

Question 11

Double density on bone scan?

Answer 11

osteoid osteoma

Question 12

Fluid-fluid levels

Answer 12

ABC

Question 13

Rind sign

Answer 13

Fibrous dysplasia

Question 14

Osteoporosis circumscripta

Answer 14

Paget’s lytic phase

Question 15

Rim sign

Answer 15

Paget’s pelvis, mixed

Question 16

One-eyed pedicle sign

Answer 16

lytic mets

Question 17

Blade of grass sign

Answer 17

Paget’s lytic phase in long bones

Question 18

Picture frame vertebra

Answer 18

Paget’s mixed in vertebra

Question 19

Ivory vertebra

Answer 19

mets, Paget’s, lymphoma

Question 20

Name the tumor that is a benign cartilaginous growth in the medullary cavity of bones and is preformed in cartilage.

Answer 20

enchondroma

Question 21

What is another name for enchondromatosis?

Answer 21

Ollier’s disease

Question 22

Name the tumor that is a solitary vascular neoplasm which is slow growing and compromised of newly formed capillary, cavernous*, or venous blood vessels.

Answer 22

hemangioma

*most common in the spine

Question 23

Possible complications are shepard’s crook and sabre shin deformities with what tumor?

Answer 23

firbous dysplasia

Question 24

Cotton wool appearance (areas of increased density in the skull) are associated with what disease?

Answer 24

Paget’s

Question 25

Name the tumor

Answer 25

Giant cell tumor

*loves distal femur and proximal tibia

Question 26

A rare benign tumor with unlimited growth potential

Answer 26

osteoblastoma

Question 27

Which type of osteoid osteoma may be difficult to diagnose due to little reactive sclerosis?

Answer 27

cancellous