MSK tumors

Question 1

Which cancers leads to mets to the bones?

Answer 1

PbKTL

P-prostate

B-breast

K- Kidney

T- thyroid

L- Lung

Question 2

Which two cancer mets cause osteoblastic lesions

Answer 2

Breast

prostate

Question 3

What condition do you see “punched out” lesions on x-ray?

Answer 3

multiple myeloma

Question 4

Which MSK tumor?

• MC benign bone cyst
• <20
• present w/ pathelogical fx
  *

Answer 4

Unicameral bone cyst

(“fluid filled”)

Question 5

Where are unicameral bone cysts most common?

Answer 5

long bones-

Prox femur and humerus

Question 6

How do you tx a unicameral bone cyst?

Answer 6

Spontaneously resolves or sx if recurrent fx

sx= aspirate or bone graft

avoid tx if near epiphysis

Question 7

What is an aneurysmal bone cyst? who is it MC in?

Answer 7

• Benign blood filled cyst
• aggressive lesion found in long bones
• >20y/o

Question 8

How do most patients with an aneurysmal bone cyst present?

Answer 8

pathologic fx

Question 9

How do you tx an aneurysmal bone cyst?

Answer 9

Curettage

Electrocautery

Bone graft

Question 10

Which tumor?

• MC benign tumor in children
• Asx or bain from pathologic fx
  *

Answer 10

Non ossifying fibroma

Question 11

How do you tx a non-ossifying fibroma?

Answer 11

observe w/ serial x-rays

sx if >50% diameter of bone

Question 12

Which tumor?

• Benign
• MC knee
• Sxs= localized pain and weakness

Answer 12

Giant cell Tumor

Question 13

Where is a giant cell tumor MC?

Answer 13

knee

Question 14

What are the s/s of Giant cell tumor

Answer 14

localized pain and weakness

Question 15

How do you tx a Giant Cell Tumor?

Answer 15

Radiation

Question 16

How is GIant Cell Tumor diagnosed?

Answer 16

X-ray–> MRI–> bone scan = hot spot

Question 17

What is the MC benign bone tumor, 10-20 y/o?

Answer 17

Osteochondroma

Question 18

What is seen on x-ray with an osteochondroma?

Answer 18

Pedunculated

Question 19

What are the S/s of an osteochondroma?

Answer 19

Abnormal bone growth, incidental finding, growth of tumor causes pain/paresthesia from impingement

Question 20

How do you tx an osteochondroma?

Answer 20

Observe if ASx w/ x-ray q6mo

if Sx then do MRI prior to excision and biopsy

Question 21

Which tumor?

• Benign bone tumor
• MC long bones
• S/s= aching pain at night

Answer 21

Osteoid osteoma

Question 22

What are the S/s of an osteoid osteoma?

Answer 22

aching pain at night

Question 23

How do you tx an osteoid osteoma? What is definitive tx?

Answer 23

tx= NSAIDs, spontaneously resolves

Definitive tx= radiofrequency ablation

Question 24

What age is an chondrosarcoma MC?

Answer 24

>40y/o

Question 25

What are the S/s of a chondrosarcoma?

Answer 25

Pain and weakness

Question 26

How do you tx a chondrosarcoma?

Answer 26

surgical excision