Abstract:The author assessed 246 cases of meningiomas, diagnosed in the Pathology Department of Fundação Faculdade Federal de Ciências Médicas de Porto Alegre during 25 years (from March 1968 to March 1993). Those tumors were classified as typical, atypical, anaplastic, and papillary, according to previously defined criteria. From these cases, 116 tumours (60 typical, 46 atypical, 9 anaplastic and 1 papillary) were randomly selected, being used an immunohistochemical technique for estrogen and progesterone receptors, a… Show more
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