Benign Bone Tumors- Osseous/Cartilagenous Origin

Question 1

What are the ossueous origin benign tumors (5)

Answer 1

1. Osteochondroma
2. Bone island
3. Osteoid ostoma
4. Osteoblastoma
5. Osteoma

Question 2

Osteochondroma- loc, age, types, pain

Answer 2

loc- metaphysis of medullary bone, tend to be in extremities

Age- 10-30

Types- Pedunculated (small stalk), Broad based (broad stalk)

Pain- painless

Question 3

What is hereditary multiple exostosis due to + clinical features

Answer 3

Multiple osteochondroma causing painless lumpy jts

Question 4

Plan of managment with osteochondroma

Answer 4

Send to MD if pain/swelling

Watch for pain/increased growth

Question 5

Bone island- loc, pain, imaging sign

Answer 5

loc- ishium, ilium, sacrum, femur (NOT skull), epiphysis/metaphysis (NOT diaphysis)

Pain- asymptomatic

Imaging- focus of cortical bone in medllary

Question 6

Osteoid Ostoma- loc, pain, age, imaging

Answer 6

loc- cortex of spine, hip, knee

pain- severe pain @ night

Age- 10-25

Imaging- lucent nidus (<1cm) w thick sclerotic border (plastic type lesion)

Question 7

Osteoblastoma- age, pain, imaging, loc

Answer 7

loc- cortex of bone (mc in spine; neural arch)

Age- <20

Pain- localized pain but not worse at night

imaging- similar to osteoid ostoma but nidus >2cm

Question 8

Osteoma- age, loc, pain , imaging

Answer 8

age- 20-40

Pain- asymptomatic

Loc- usually in skull (like bone island in skull)

imaging- may cause expansion

Question 9

What are the tutors of cartilaginous origin (2)

Answer 9

1. enchrondromas

2. Chondroblastomas

Question 10

Enchrondroma- age, loc, matrix/margins, management

Answer 10

age- 10-40

loc- medulla of metaphysic (hands/feet)

Imaging- lesion lucent w calcifications with well defined non sclerotic border

manage- refer if pain (as it can become chondrosarcoma)

Question 11

what is enchondromatosis/Oilers disease

Answer 11

Multiple enchondromas that have ability to be malignant (10%)

Question 12

What is maffucis syndrome

Clinical picture of pt

Answer 12

Enchondromatosis w/ soft tissue involvement

-could lead to limb shortening, skin will look yellow/redish

Question 13

Chondroblastoma- age, pain, loc, features, manage

Answer 13

Age- 10-25 (rare)
Pain- yes

Loc- Always in epiphysis/apopysis (knee, hip, shoulder)

Imaging- Large lytic lesion w well defined margins

Tx- if pain refer!