Obstetrics notes

Apr 16th, 2015
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MALIGNANT NEOPLASMS OF BONEGENERAL CHARACTERISTICS OF BONETUMOURSAge at presentation Peak incidence Range of common incidence1 malignant tumours Characterized by ability to spread to otherregions not in continuity Spread usually via bloodstream Also by lymph/ CSF/ serous cavities/ bonemarrow spaces Unremitting growth periodic variationGENERAL CHARACTERISTICS OF BONETUMOURS Cont.2 Tumours of bone These may be from Mets from malignant tumour usually softtissue by direct spread or from distantsiteRADIOLOGICAL ASSESMENT OF BONETUMOURSLocation Within skeleton Within individual boneRADIOLOGICAL ASSESMENT OF BONETUMOURS Cont.Regularity of marginPeriosteal reactionMatrix mineralizationCLASSIFICATIONMetastatic neoplasia of bonePrimary malignant neoplasms of bone Chondroid Origin ChondrosarcomaCLASSIFICATION Cont.Primary malignant neoplasms of bone cont. Osteoid Origin Osteosarcoma Other varieties of osteosarcoma Telengiectatic osteosarcoma Low-grade intramedullary osteosarcomaCLASSIFICATION Cont.Primary malignant neoplasms of bone cont. Osteoid Origin cont. Surface osteosarcoma Parosteal/Periosteal/High-gradelesions Sarcoma in Pagets disease/Sarcoma inpreviously irradiated bone Primary multifocal osteosarcomaCLASSIFICATION Cont.Primary malignant neoplasms of bone cont. Fibrous

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