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  • 1
    ISSN: 0942-0940
    Keywords: Atypical meningioma ; anaplastic meningioma ; postoperative radiotherapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We retrospectively analysed 13 patients (pts.) treated at the University of Tübingen from 1985 to 1993 to evaluate the results of radiation therapy (XRT) given as an adjuvant to totally or subtotally resected meningiomas. The overall survival was 38% at five years with a probability of relapse of 50% at this time. Reclassification of the tumours according to the new WHO-classification of brain tumours [14] revealed 10 grade-II-tumours (atypical meningioma) and 3 grade-III-tumours (anaplastic meningioma). Radiotherapy failed in all 3 pts. with macroscopically incomplete resection (Simpson's grade IV), who died with relapse between 4 and 51 months after radiotherapy. 5 out of 10 pts. with grade-II-tumours relapsed. All 3 pts. with grade-III-tumours died with relapse between 6 and 21 months after XRT. Morbidity was seen in 2 pts. after irradiation with 60 GY (ICRU dose specification). Complete surgical exstirpation offers the best possibility of tumour control. Grade-III-tumours should be irradiated whatever the extent of the primary surgery was. Our results might indicate a possible indication for XRT in pts. with atypical grade-II-tumours especially when radical surgery must be in doubt. Prospective multicentre trials are warranted to prove the prognostic value of the new WHO-classification for atypical and anaplastic meningiomas and to define the ultimate role of radiotherapy in this setting.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0942-0940
    Keywords: Pituitary tumour recurrence ; clinical symptoms ; CT-investigation ; recurrence rate ; prolactin level examination ; combined modality of surgical and radiotherapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The tumour recurrence rate of 210 patients with operated hypophysomas were investigated. Depending on the surgicaal approach, total or subtotal extirpation of the adenomas, the recurrence rates varied from 10,4 to 35%. 33 patients with pituitary tumour recurrences were followed up over a period of 20 years. Clinical symptoms CT-results at relapse are represented. Serum prolactin level (PRL) was determined before and after surgical and radiotherapy of PRL-producing adenomas. In these cases PRL can be accepted as a tumour marker. 13 patients with relapsed hypophysomas received local irradiation (5.7 MeV linear accelerator) after recurrence operation. An individual comparison in the same patient between surgical therapy alone and combined surgical and radiotherapy was possible. Based on the obtained experience with this combined treatment a therapy scheme using combined surgery and radiotherapy in pituitary tumours is suggested.
    Type of Medium: Electronic Resource
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