Neoplasm

Question 1

Osteochondroma

Answer 1

• bengin
• young boy begin skeletal tumour
• long bones
• pedunculated from metaphysics (mushroom appearance)
• cauliflower

DDx- chondrosarcoma

Question 2

Haemangioma

Answer 2

• bengin
• spine (TL) or skull (frontal bone)
• females over 40
• expansile
• corduroy/honeycomb appearance
• unaffected endplates

Question 3

Osteoma

Answer 3

• bengin
• rare but in females more
• forntal or ethmoid sinus
• may present with chronic sinusitis
• well circumscribed sclerotic appearance
• not expansile

Question 4

Osteoid Osteoma

Answer 4

• bengin
• young boys 1-15
• femur or tibia
• deep ache, night pain
• pain is releived by aspirin
• solid periosteal response
• geographic lesion

Question 5

Osteoblastoma

Answer 5

-benign
-young boys
- SP, TP, lamina of spine
- expansile lesion
-eggshell thing corticol rim
maybe be lucent mottled
-pain is not relieved by aspirin

Question 6

Chondroblastoma

Answer 6

• bengin
• young boys 10-25
• epiphyseal region of the long bones
• oval or round lytic lesion with a sharp size of transition (geographic)
• fluffy cotton wool appearance

Question 7

Bone Cyst

Answer 7

• • bengin
• young boys 3-14
• femur and humerus
• no ssx until #
• fluid filled cavity in the metaphysics
• lined by fibrous connective tissue with mesothelial surface
• lucent geographic lesion
• no corticol disruption
• expansile but not beyond epiphysis diameter

Question 8

Giant Cell Tumour

Answer 8

• malignant
• long bones
• 20 to 40 yo
• intermittant ache , local swelling and tenderness
• sharply circumscribed lytic lesion
• soap bubble appearance
• thin expanded cortex with a wide ZOT at end-steal margins

Question 9

Multiple Myeloma

Answer 9

• malignant
• 50 -70 y,o
• common in Tx, Lx
• bone scan is cold
• sharply circumscribed osteolytic defects (punched out appearance)

Question 10

Plasmacytoma

Answer 10

• malignant
• 40 80 yo
• can develop into MM
• mandible, allium, scapula, vertebra, proximal femur
• highly expansile
• lucent geographic lesion
• soap bubble

Question 11

Osteosarcoma

Answer 11

• malignant
• 10-25 y.o.
• long bones
• painful swelling at site of lesion
• occurs in metaphysics
• 50% looks sclerotic with dense ivory lesion
• 25% lytic
• 25% mixed mottle permeative lesion

Question 12

Chrondrosarcoma

Answer 12

• malignant
• 40- 60 yo
• most common pelvis
• large lucent, round or oval appearance,
• expansile
• poorly defined margins
• bubble matrix with mottled appearance
• cotton wool appearance
• laminated periosteal response

Question 13

Ewings Sarcoma

Answer 13

• malignant
• under 20 y.o
• long bones
• ususally in diaphysis
• wide ZOT
• onion skin periosteal response

Question 14

Non-Hodgkins Lymphoma

Answer 14

• malignant
• 60 y.o
• long bones
• peramtive or punched out lesions
• widespread osteopenia destruction