TY - JOUR
T1 - Nucleolar organizer regions in optic gliomas
AU - Burnstine, Michael A.
AU - Levin, Leonard A.
AU - Louis, David N.
AU - Tessa Hedley-whyte, E.
AU - Kupsky, William J.
AU - Doepner, Dietrich
AU - Albert, Daniel M.
PY - 1993/12
Y1 - 1993/12
N2 - Summary: The biological nature of optic gliomas is controversial, with some considering them benign hamartomatous lesions, and others believing them to be true neoplasms. We evaluated the use of colloid silver impregnation of nucleolar organizer region-associated proteins (AgNORs) in making this distinction. Thirty-one optic gliomas, 14 optic nerve meningiomas, and a single case of giant cell glioblastoma multiforme (monstrocellular glioma) of the optic chiasm were stained for AgNORs and counted in a masked fashion. The optic gliomas contained 2.01±0.09 AgNORs per nucleus, similar to that of optic nerve meningiomas (2.15±0.15) and our previously reported counts for diffuse fibrillary astrocytoma (2.22±0.10), and significantly more than that of reactive astrocytosis (1.18±0.02). Six of the seven optic gliomas examined had compound AgNORs, a feature associated with malignancy in other tumour types. AgNOR counts did not correlate with clinical features, including those seen during the post-operation course. These data suggest that optic gliomas may be true neoplasms, and not benign hamartomas.
AB - Summary: The biological nature of optic gliomas is controversial, with some considering them benign hamartomatous lesions, and others believing them to be true neoplasms. We evaluated the use of colloid silver impregnation of nucleolar organizer region-associated proteins (AgNORs) in making this distinction. Thirty-one optic gliomas, 14 optic nerve meningiomas, and a single case of giant cell glioblastoma multiforme (monstrocellular glioma) of the optic chiasm were stained for AgNORs and counted in a masked fashion. The optic gliomas contained 2.01±0.09 AgNORs per nucleus, similar to that of optic nerve meningiomas (2.15±0.15) and our previously reported counts for diffuse fibrillary astrocytoma (2.22±0.10), and significantly more than that of reactive astrocytosis (1.18±0.02). Six of the seven optic gliomas examined had compound AgNORs, a feature associated with malignancy in other tumour types. AgNOR counts did not correlate with clinical features, including those seen during the post-operation course. These data suggest that optic gliomas may be true neoplasms, and not benign hamartomas.
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U2 - 10.1093/brain/116.6.1465
DO - 10.1093/brain/116.6.1465
M3 - Article
C2 - 8293281
AN - SCOPUS:0027773125
SN - 0006-8950
VL - 116
SP - 1465
EP - 1476
JO - Brain
JF - Brain
IS - 6
ER -