title: Application of silver colloidal staining method in the diagnosis of intracranial glioma.
abstract: A silver colloidal staining technique for the demonstration of argyrophilic nucleolar organizer regions (Ag-NORs) was used on the paraffin sections of reactive gliosis and grade I astrocytoma tissue. Quantitative as well as qualitative differences of Ag-NORs were found between the cells of reactive gliosis and grade I astrocytoma. In cases of reactive gliosis, the Ag-NOR counts averaged 1.19 +/- 0.16 per nucleus, while in grade I astrocytoma, Ag-NOR counts averaged 2.36 +/- 0.32 per nucleus (P < 0.05). Compound Ag-NORs were also seen in the nuclei of cells in grade I astrocytoma while they were not present in the nuclei of cells in cases of reactive gliosis. The results of the study indicate that Ag-NOR technique is an useful method and can be applied in situations where a distinction between grade I astrocytoma and reactive gliosis becomes difficult at the light microscopic level.
authors.affiliation: Department of Pathology, Sree Chitra Tirunal Institute for Medical Sciences & Technology, Thiruvananthapuram.
authors.forename: V V
authors.initials: VV
authors.lastname: Radhakrishnan
authors.forename: N S
authors.initials: NS
authors.lastname: Radhakrishnan
authors.forename: D
authors.initials: D
authors.lastname: Rout
mesh_terms: D001254:Astrocytoma / Q000175:diagnosis*; D001932:Brain Neoplasms / Q000175:diagnosis*; D003102:Colloids; D003937:Diagnosis, Differential; D005910:Glioma / Q000175:diagnosis*; D006801:Humans; D012189:Retrospective Studies; D016622:Silver Staining
chemical_list: D003102:Colloids