• Apisara Chanchotisatien, Jie Xiong, Jintai Yu, and Shuguang Chu.
• Shanghai Medical College, Fudan University, Xuhui District, Shanghai, China.
• World Neurosurg. 2019 Feb 1; 122: 573-576.

BackgroundPrimary intramedullary spinal cord (IMSC) glioblastoma (GBM) is an extremely rare entity; we report the first case of primary IMSC GBM presenting with exophytic involvement. The prognosis of glioblastoma remains poor due to the aggressive nature of the disease and lack of effective treatment.Case DescriptionA 27-year-old Asian female presented to our hospital with a 1-month history of dysuria, incomplete bladder emptying, progressive numbness, and weakness of both lower limbs, as well as a 1-year history of back pain. Spinal magnetic resonance imaging (MRI) revealed an intramedullary lesion and exophytic growth in the T4-T12 and T5-12 regions, respectively. The patient's MRI findings were atypical of spinal glioblastoma. The diagnosis was made on the basis of immunohistochemical and pathologic analyses of tissue samples obtained from an open biopsy. The patient received a standard course of glioblastoma radiotherapy and adjuvant temozolomide chemotherapy, which improved her symptoms in the absence of an apparent reduction in tumor size.ConclusionsAlthough MRI is of indisputable importance in the diagnosis of spinal cord lesions, immunohistochemical and histopathologic studies are often required to establish a definitive diagnosis. It remains unclear how the unusual involvement of exophytic growth will affect the prognosis of primary IMSC GBM.Copyright © 2018 Elsevier Inc. All rights reserved.

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