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  • Title: [Clinical study on the recurrence of meningiomas: correlating factors for the recurrence and therapeutic prognosis of meningiomas].
    Author: Miyagami M, Miyagi A, Kido G, Tsubokawa T.
    Journal: No Shinkei Geka; 1994 May; 22(5):421-8. PubMed ID: 8196827.
    Abstract:
    Authors have studied 128 cases of meningiomas which were operated on and examined histologically. 12 cases (11.3%) of 106 cases of the meningiomas followed up for more than 5 years after surgery had recurrence after the primary operation. The distribution of age and sex, the tumor location, the histological type, the extent of tumor evacuation and AgNORs counts and BrdU labeling index for the evaluation of tumor proliferation were studied comparatively in the two groups, the recurrent and nonrecurrent meningiomas. 8 cases (19.0%) of 42 cases of the meningiomas in the age-group lower than 50 years old were recurrent cases, whereas 4 cases (6.0%) of 67 cases in the age-group over 50 years old were non-recurrent. Concerning the sex distribution of the meningiomas in our cases recurrent rate was 20.5% among males and 6.0% among females. The tumor locations of the meningiomas did not correlate significantly with recurrence. The extent of tumor removal demonstrated Simpson grade I (47 cases), grade II (37 cases), grade III (17 cases), grade IV (5 cases) on primary operation. Recurrence was found in 11 cases (13.1%) of 84 cases operated on by total removal of Simpson grade I or grade II. 8 cases of 11 cases had recurrence within 5 years after the primary operation of Simpson grade I or II. Total removal of the tumor was important in order to bring about long survival after operation. But correlation between the extent of tumor removal and recurrence was not able to be recognized. Histologically, all of the malignant, atypical and papillary type of meningiomas treated in the primary operations had recurrence.(ABSTRACT TRUNCATED AT 250 WORDS)
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