[Chondrosarcoma of the bone. Differential pre- and postoperative diagnosis using magnetic resonance].
Twelve patients were studied by means of Magnetic Resonance Imaging (MRI) in order to demonstrate either loco-regional recurrence of central chondrosarcomas or degenerative evolutions of exostoses. MRI findings were compared with plain film, scintigraphy, and Computed Tomography. MRI showed loco-regional recurrences by demonstrating their site, extent, and relationship with adjacent structures. In showing the degenerative evolution of exostoses MRI--confirmed at surgery--was superior to plain film in 3 cases out of 7, and to Computed Tomography in 2 cases. The authors discuss MRI findings: chondrosarcomas have low-intensity signal in T1-weighted sequences and high-intensity signal in T2-weighted. Thanks to its high contrast resolution MRI always allowed the detection of the chondrosarcoma. Nevertheless, MRI did not allow the tumor grading--which is due either to a difficult evaluation of the morphology of neoplastic calcifications, or to non-specific-intensity signal.
Masciocchi
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Cattedra di Radiologia, Università L'Aquila.
Fascetti
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Ghera
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Manili
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M
Santori
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FS
Passariello
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R
D000293:Adolescent; D000328:Adult; D001859:Bone Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D002813:Chondrosarcoma / Q000175:diagnosis* / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D005096:Exostoses / Q000175:diagnosis / Q000000981:diagnostic imaging; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D011877:Radionuclide Imaging; D014057:Tomography, X-Ray Computed
Condrosarcomi dello scheletro. Diagnostica differenziale pre- e post-operatoria con Risonanza Magnetica.