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Benign BoneBenign Bone

TumoursTumours

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What is an Osteoid Osteoma?What is an Osteoid Osteoma? M !" presents between age #$ % &' yrsM !" presents between age #$ % &' yrs (evere and persistent pain % typically(evere and persistent pain % typically

relieved by aspirinrelieved by aspirin !emur" tibia % most commonly) (pine *!emur" tibia % most commonly) (pine *

usually pedicleusually pedicle +esion in cortex of bone with reactive+esion in cortex of bone with reactive

sclerosis around a radiolucent central nidussclerosis around a radiolucent central nidus

,idus % immature osteoid tissue - highly,idus % immature osteoid tissue - highlyvascular cellular tissuevascular cellular tissue Rarely larger than # cm in diameterRarely larger than # cm in diameter

.f doubt.f doubt T / MR. scan % usefulT / MR. scan % useful 0one scan % intense 1hot spot2 in affected0one scan % intense 1hot spot2 in affected

areaarea TreatmentTreatment

surgical excision" if complete" is curativesurgical excision" if complete" is curative

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What is a Chondroma?What is a Chondroma?

Most common of all bone tumoursMost common of all bone tumours

Two varieties %Two varieties % enchondroma enchondroma  andand ecchondroma ecchondroma  3nchondroma3nchondroma % confined within intact cortex% confined within intact cortex

causes cortex to becomecauses cortex to becomestructurally thinstructurally thin

3cchondroma3cchondroma % protrudes beyond cortex of bone% protrudes beyond cortex of bone 0oth most common in tubular bones of hands and feet0oth most common in tubular bones of hands and feet +ess common in larger tubular / flat bones+ess common in larger tubular / flat bones Malignant transformationMalignant transformation

Rare in solitary chondromasRare in solitary chondromas &'4 of cases in multiple enchondromatosis 56llier7s&'4 of cases in multiple enchondromatosis 56llier7s

disease8disease8

TreatmentTreatment

  excision and currettageexcision and currettage 9 bone grafting9 bone grafting

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What are Juxta-Articular Bone Cysts?What are Juxta-Articular Bone Cysts?

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What is a #osino$hilic %ranuloma?What is a #osino$hilic %ranuloma? Aistiocytosis 1B2Aistiocytosis 1B2 6ne of a family of conditions which includes6ne of a family of conditions which includes

Aand*(chuller*hristian and +etterer*(wieAand*(chuller*hristian and +etterer*(wiediseasedisease

=resents in adolescence=resents in adolescence (kull" mandible" vertebral bodies" ribs"(kull" mandible" vertebral bodies" ribs"

metapysis long bonesmetapysis long bones =ain is presenting feature=ain is presenting feature Radiographic appearanceRadiographic appearance

+ucent area with cortical thinning+ucent area with cortical thinning Certebral body lesions have a typicalCertebral body lesions have a typical

flattened" dense appearanceflattened" dense appearance TreatmentTreatment

0iopsy is essential % currettage usually0iopsy is essential % currettage usuallyerradicates iterradicates it

Multiple lesions % suggests more complexMultiple lesions % suggests more complexform of diseaseform of disease