benign tumour of bone

1. OSTEOCHONDROMA

2.  Osteochondroma or osteocartilaginous
exostoses is the most common benign
tumor of the bones.
 The tumor forms cartilage-capped bony
outgrowth on the surface of bones
(exostoses)
 It mostly occurs where cartilage forms bone.
Commonly affects long bones in the leg,
pelvis, or scapula
 Target- METAPHYSIS
 Development take place during skeletal
growth between the ages of 13 and 15 and
ceases when the growth plate fuses at
puberty.

3.  Osteochondromas represent 35% of all benign
tumors and 8% of all bone tumors.
 Osteochondromas do not result from injury and
the cause is idiopathic.
 Recent research has indicated that multiple
osteochondromas is an autosomal dominant
inherited disease

4. Transmission
Non
hereditary
85%
Hereditary
15%
Number
Solitary
Multiple
Size
Sessile
Pedunculated

5.  The majority of osteochondromas are
symptomless and are found incidentally.
 Hard immobile painless palpable mass,
 Nerve & vascular compression(numbness,
weakness, loss of pulse)
 Muscle soreness
 Bursitis
 If the tumor is found under a tendon, it can cause
pain during movement causing restriction of joint
motion.

7. • NO
TREATMENT
• (only follow up)
Solitary and
asymptomatic
• COMPLETE
SURGICAL
EXCISION
Symptomatic

8. Signs of malignancy
Pain at
the site
Growth
after
puberty
Cartilage
cap
>2cm