MSK Onco

Question 1

Most common sclerotic bone metastasis

Answer 1

Prostate cancer

Question 2

Most common pediatric bone tumor

Answer 2

Osteosarcoma NOT ewing

Question 3

Imaging for suspected pathological fx

Answer 3

MRI with contrast tro bone tumor

Question 4

Use of MRI scan for suspected fractures

Answer 4

Tro soft tissue injury or occult fx

Question 5

What to suspect with multiple bony lytic lesions

Answer 5

1. Multiple Myeloma
2. Metastasis

Question 6

System of differentiating benign vs malignant sarcomas on imaging

Answer 6

What the tumour is doing to the bone: lytic or sclerotic
How the bone is reacting to the tumor: Colman’s,onion skin, sunburst etc
Narrow vs wide zone of transition

Question 7

How to definitively diagnose sarcoma

Answer 7

Needle biopsy: But reduces bone integrity and strength

Question 8

Staging system for soft tissue sarcomas

Answer 8

AJCC

Question 9

Natural history of acute PID

Answer 9

2/3 resolve spontaneously within 6 weeks

Question 10

Classification for spondylolisthesis

Answer 10

Meyerding

Question 11

Most common level for spondylolisthesis

Answer 11

L4/L5 followed by L3/L4

Question 12

Most common causes of spondylolisthesis

Answer 12

Degenerative and isthmic

Question 13

Mx of chondrosarcoma

Answer 13

Resection, chemoRT not effective

Question 14

Mx of Ewing sarcoma

Answer 14

Sandwich of neoadjuvant chemo- surgery- adjuvant chemo