Osteochondroma

Fakultas Kedokteran Universitas TrisaktiRumah Sakit Umum Daerah Bekasi

Andrian Astoguno B.Pdr. Gatot Ibrahim, SpOT (K). Spine

INCIDENCE

Malignant Neoplasms

Primary LesionsSecondary Neoplasm1 % all ages groups

5 % Childhood

Benign Neoplasms and Neoplasm-like Lesion

Age Incidence

Sex Incidence

Site Incidence

45 % of benign bony tumours

12 % of all bony tumours

Become evident < 20 yrs

Solitary or multiple

Any enchondral ossification bone

DIAGNOSIS

Unexplained Pain Swelling Lump Decrease in

function

Swelling of a Benign Lesion

Firm

Nontender

OSTE

OCHO

NDRO

MA

• Cartilage capped exostosis

• Commonest benign tumour of bone

• Metaphyseal developmental abnormality

CLIN

ICAL

LY

• Lump or mechanical problem

• Tendon or nerve irritation

• Sessile or pedunculated

• 50% distal femur, proximal tibia, proximal humerus

CLIN

ICAL

• Active growth during puberty

• Move towards diaphysis during growth

• Excise if troublesome in second decade

RADI

OLOG

Y Flat/ sessile / pedunculated

Tumour blending into metaphysis

Pedunculated orientated proximally

Cartilage cap with calcification

• Normal bone covered by normal cartilage cap

• Cartilage cap resembles normal growth plate

• Cartilage more disorganized

PATH

OLOG

Y

Covered by thin layer of periosteum

Binucleate chondrocytes in lacunae

TREATMENTNot all osteochondromata require treatment

Extra-capsular marginal excision

Recurrence < 5%

PROGNOSISRisk of malignancy if solitary- 0.2 %Risk of malignancy in diaphyseal aclasia :- 20 % Sarcomatous changes usually low- grade

KEPU

STAK

AAN Textbook of disorders and injuries of the

musculoskeletal system 3th Edition. Robert Bruce SalterSystem of Orthopaedics and Fractures Apleys 9th Edition.

Bone Tumor 3th Edition. David C. Dahlin, M.D.

Atlas of Orthopaedic Pathology with Clinical and Radiologic Correlations, Peter G.BulloughOrthopedic Radiology a Practical Approach, Adam Greenspan

TERIMA KASIH