PMID- 18095139 OWN - NLM STAT- MEDLINE DCOM- 20081014 LR - 20071220 IS - 1433-7398 (Print) IS - 1433-7398 (Linking) VI - 24 IP - 1 DP - 2007 TI - Comparison of numerical change of epidermal growth factor receptor gene among pre- and postradiation glioma, and gliosis, and its clinical use. PG - 15-8 AB - Surgery with following chemoradiotherapy is the mainstream glioma treatment. In the course of postradiation events, however, it is sometimes difficult for neurosurgeons, radiologists, and pathologists to discriminate tumor recurrence from radiation necrosis. The epidermal growth factor receptor (EGFR) gene, on chromosome 7, is known to gain in copy number frequently in high-grade gliomas. The authors applied the fluorescence in situ hybridization (FISH) method to observe the gene's numerical status in pre- and postradiation glioma samples to elucidate whether this technique is useful in the discrimination of glioma recurrence from radiation necrosis. When 15 postradiation glioma samples and 4 postradiation nonglioma samples were tested, all the recurrent glioma tissue harbored numerical aberrations of the gene, whereas no abnormality could be observed in necrosis or in nonglioma gliosis. FISH could even prove a residual glioma cell in a gliotic tissue taken by needle biopsy after gamma-knife radiosurgery, which had been executed on a supposed metastatic brain tumor. FISH is considered to be of help in accurate diagnosis, especially when the usual histopathological diagnosis is difficult because of radiation effects or small sample size. FAU - Okada, Yoshifumi AU - Okada Y AD - Department of Neurosurgery, Dokkyo University School of Medicine, 880 Kitakobayashi, Mibu, Tochigi, 321-0293, Japan. yokada@dokkyomed.ac.jp FAU - Ohno, Chihiro AU - Ohno C FAU - Ueki, Keisuke AU - Ueki K FAU - Ogino, Masahiro AU - Ogino M FAU - Kawamoto, Shunsuke AU - Kawamoto S FAU - Kim, Phyo AU - Kim P LA - eng PT - Comparative Study PT - Journal Article DEP - 20070525 PL - Japan TA - Brain Tumor Pathol JT - Brain tumor pathology JID - 9716507 SB - IM MH - Adult MH - Aged MH - Brain Neoplasms/*genetics/pathology/radiotherapy MH - Female MH - *Genes, erbB-1 MH - Glioma/*genetics/pathology/radiotherapy MH - Gliosis/etiology/*genetics/pathology MH - Humans MH - In Situ Hybridization, Fluorescence MH - Male MH - Middle Aged MH - Radiation Injuries/*genetics/pathology MH - Radiotherapy/adverse effects EDAT- 2007/12/21 09:00 MHDA- 2008/10/15 09:00 CRDT- 2007/12/21 09:00 PHST- 2007/01/09 00:00 [received] PHST- 2007/02/15 00:00 [accepted] PHST- 2007/12/21 09:00 [pubmed] PHST- 2008/10/15 09:00 [medline] PHST- 2007/12/21 09:00 [entrez] AID - 10.1007/s10014-007-0213-5 [doi] PST - ppublish SO - Brain Tumor Pathol. 2007;24(1):15-8. doi: 10.1007/s10014-007-0213-5. Epub 2007 May 25.