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Atypical Teratoid/Rhabdoid Tumor of the Spinal Cord in a Child: Case Report and Comprehensive Review of the Literature.
INTRODUCTION: Atypical teratoid/rhabdoid tumor (AT/RT) of the central nervous system is characterized by SMARCB1/INI deletion or mutation in the long arm of chromosome 22 11(22q11.2), also resulting in loss of nuclear expression of INI1 protein immunohistochemically. AT/RT tumors usually occur in children below 3 years. The tumor is usually seen in the cerebellum or the cerebrum, with an extremely rare incidence in the spinal cord.
MATERIALS AND METHODS: We report a rare case of AT/RT in a 6-year-old boy who had a primary spinal cord lesion in the thoracolumbar junction. Pathology revealed loss of nuclear staining of INI1 immunohistochemically. This is the first case reported with mixed intraspinal lesion (intra- and extramedullary). The patient underwent two surgeries and received radiotherapy and chemotherapy; however, he died 16 months after the initial presentation.
RESULTS AND DISCUSSION: We reviewed the literature on all children with spinal cord AT/RT. The review showed that the cervical region is the most common location of origin, especially in younger children. Reported cases were treated with a combination of surgery, systemic and intrathecal chemotherapy, and radiation therapy, and a survival time of 18 months represented the best outcome. Overall mean survival time was 10 months.
MATERIALS AND METHODS: We report a rare case of AT/RT in a 6-year-old boy who had a primary spinal cord lesion in the thoracolumbar junction. Pathology revealed loss of nuclear staining of INI1 immunohistochemically. This is the first case reported with mixed intraspinal lesion (intra- and extramedullary). The patient underwent two surgeries and received radiotherapy and chemotherapy; however, he died 16 months after the initial presentation.
RESULTS AND DISCUSSION: We reviewed the literature on all children with spinal cord AT/RT. The review showed that the cervical region is the most common location of origin, especially in younger children. Reported cases were treated with a combination of surgery, systemic and intrathecal chemotherapy, and radiation therapy, and a survival time of 18 months represented the best outcome. Overall mean survival time was 10 months.
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