title: Immunohistochemical expression of progesterone and estrogen receptors in meningiomas.
abstract: In this study we present results of investigations of progesterone and estrogen receptors in most frequent, WHO grade I histological types of meningiomas (meningothelial, fibrous, and transitional) and in atypical--WHO grade II variant of these tumors. Samples from 64 tumors were examined. The cohort consisted of 46 WHO grade I (21 transitional, 13 fibrous and 12 meningothelial histologic variants) and of 18 atypical meningiomas. Apart from immunohistochemical examination of progesterone and estrogen receptors, MIB 1 labeling index was estimated. Positive immunoreaction for progesterone receptors was found in 100% meningothelial, 95% transitional, 46% fibrous and 78% atypical variant of meningiomas. Intensity of immunoreaction was stronger in grade I than in grade II tumors. Immunoexpression of estrogen receptors was found in 48% of the investigated meningiomas. No correlation was stated between WHO grade I and grade II tumors, and between meningothelial, transitional and fibrous variants of the neoplasms.
authors.affiliation: Department of Pathology Medical University of Lodz, Czechosłowacka 8/10, 92-216 Łódź. olaomulecka@poczta.onet.pl
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Omulecka
authors.forename: Wielisław
authors.initials: W
authors.lastname: Papierz
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Nawrocka-Kunecka
authors.forename: Iwona
authors.initials: I
authors.lastname: Lewy-Trenda
mesh_terms: D000368:Aged; D001932:Brain Neoplasms / Q000378:metabolism* / Q000473:pathology; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008579:Meningioma / Q000378:metabolism* / Q000473:pathology; D008875:Middle Aged; D011960:Receptors, Estrogen / Q000096:biosynthesis*; D011980:Receptors, Progesterone / Q000096:biosynthesis*
chemical_list: D011960:Receptors, Estrogen; D011980:Receptors, Progesterone