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Juxtacortical osteosarcoma: A radiologic and histologic spectrum (1985)

Levine, E. ; Smet, A. A. ; Huntrakoon, M.

Springer

Skeletal radiology 14 (1985), S. 38-46

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ISSN: 1432-2161

Keywords: Juxtacortical osteosarcoma ; Radiographic features ; Pathologic features

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Abstract Radiologic and pathologic findings were analyzed in four patients with parosteal osteosarcomas, three with periosteal osteosarcomas and one with a high-grade surface osteosarcoma. Plain film and histologic findings considered together are usually distinctive and permit differentiation of these tumors from each other and from other lesions with which they are frequently confused. Prognosis and management are determined by tumor extent and histologic grade. Computed tomography is more accurate than conventional tomography, angiography, and bone scintigraphy for preoperative determination of tumor extent and for assessing tumor relationships to the bone cortex and medullary cavity. Histologically, parosteal osteosarcomas are usually low-grade, while periosteal and high-grade surface osteosarcomas are generally high-grade tumors and have worse prognoses. High-grade surface osteosarcoma, which is indistinguishable in behavior and histology from classical medullary osteosarcoma, requires more aggressive surgical management than parosteal and periosteal osteosarcomas.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00361191

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Cyclodimerisation reactions of conjugated dienes with aldehydes - I:We dedicate this work to the late Mr Theo Lefèvre, our former Minister for Scientific Programmation. Formation of tetrahydropyrans and their 300 MHz 1H NMR spectra (1973)

De Smet, A. ; Anteunis, M.

Chichester : Wiley-Blackwell

Organic Magnetic Resonance 5 (1973), S. 589-591

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ISSN: 0030-4921

Keywords: Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: The palladium catalysed reaction of butadiene with aldehydes yields 2-substituted 3,6-divinyl-tetrahydropyrans.1-4 The reaction has been extended to isoprene and myrcene. With formaldehyde only 2,5-substituted pyrans have been isolated. The isomeric tetrahydropyrans obtained were fully characterised by 1H NMR, and representative 300 MHz spectra are given. Attempts to react aldehydes with 2-methoxybutadiene were unsuccessful.

Additional Material: 4 Tab.