Warapat VirayavanichVorachai SirikulchayanontaSuphaneewan JaovisidhaSuradej HongengWichian LaohacharoensombatRatanaporn PornkulMahidol University2018-09-242018-09-242010-02-01Journal of the Medical Association of Thailand. Vol.93, No.2 (2010), 252-25601252208012522082-s2.0-77949679398https://repository.li.mahidol.ac.th/handle/20.500.14594/29778Presacral fibrosarcoma is a rare malignant tumor in childhood. Because of its rarity in the presacral region, it is often missed from the differential diagnosis of presacral mass in childhood. The authors present a case of large presacral fibrosarcoma involving spinal canal, with an initial presentation of back pain and abnormal gaiting.Mahidol UniversityMedicineArticleSCOPUS