Concise review of radiosurgery for contemporary management of pilocytic astrocytomas in children and adults  

作　　者：Omer Sager Ferrat Dincoglan Selcuk Demiral Bora Uysal Hakan Gamsiz Esra Gumustepe Fatih Ozcan Onurhan Colak Ahmet Tarik Gursoy Cemal Ugur Dursun Ahmet Oguz Tugcu Galip Dogukan Dogru Rukiyye Arslan Yelda Elcim Esin Gundem Bahar Dirican Murat Beyzadeoglu 

机构地区：[1]Department of Radiation Oncology,Gulhane Medical Faculty,University of Health Sciences,Ankara 0090,Turkey

出　　处：《World Journal of Experimental Medicine》2022年第3期36-43,共8页世界实验医学杂志

摘　　要：Pilocytic astrocytoma(PA)may be seen in both adults and children as a distinct histologic and biologic subset of low-grade glioma.Surgery is the principal treatment for the management of PAs;however,selected patients may benefit from irradiation particularly in the setting of inoperability,incomplete resection,or recurrent disease.While conventionally fractionated radiation therapy has been traditionally utilized for radiotherapeutic management,stereotactic irradiation strategies have been introduced more recently to improve the toxicity profile of radiation delivery without compromising tumor control.PAs may be suitable for radiosurgical management due to their typical appearance as well circumscribed lesions.Focused and precise targeting of these well-defined lesions under stereotactic immobilization and image guidance may offer great potential for achieving an improved therapeutic ratio by virtue of radiosurgical techniques.Given the high conformality along with steep dose gradients around the target volume allowing for reduced normal tissue exposure,radiosurgery may be considered a viable modality of radiotherapeutic management.Another advantage of radiosurgery may be the completion of therapy in a usually shorter overall treatment time,which may be particularly well suited for children with requirement of anesthesia during irradiation.Several studies have addressed the utility of radiosurgery particularly as an adjuvant or salvage treatment modality for PA.Nevertheless,despite the growing body of evidence supporting the use of radiosurgery,there is need for a high level of evidence to dictate treatment decisions and establish its optimal role in the management of PA.Herein,we provide a concise review of radiosurgery for PA in light of the literature.

关 键 词：Pilocytic astrocytoma RADIOSURGERY Stereotactic irradiation Low-grade glioma Radiation oncology CHILDREN 

分 类 号：R73[医药卫生—肿瘤]