Correlation of MRI and CSF cytology in the diagnosis of medulloblastoma spinal metastases

被引:16
作者
Harrison, SK
Ditchfield, MR [1 ]
Waters, K
机构
[1] Royal Childrens Hosp, Dept Radiol, Melbourne, Vic 3051, Australia
[2] Royal Childrens Hosp, Dept Oncol, Melbourne, Vic, Australia
关键词
D O I
10.1007/s002470050417
中图分类号
R72 [儿科学];
学科分类号
100202 ;
摘要
Background. Medulloblastoma frequently spreads to involve the spinal cord, which significantly reduces patient survival and determines whether chemotherapy is utilised and the dose of irradiation to the neuraxis. Staging is usually achieved by MRI of the spine and/or cytology of CSF, both methods having their limitations. Objective. To determine whether there is a correlation between CSF cytology and the demonstration of spinal metastases by MRI and whether CSF cytology is useful when spinal MRI is equivocal. Materials and methods. All cases of medulloblastoma diagnosed at our hospital between 1992 and 1997 were identified. Of 26 cases, 11 presentations (age range 4 months to 12 years) had both CSF cytology (either from the cisterna magna or lumbar puncture) and spinal MRI. The MR studies were reviewed for the presence of metastases and the CSF cytology for the presence of tumour cells. Results. We found 100% correlation between MRI and CSF cytology for samples taken by lumbar puncture (four negative and three positive on both investigations). No correlation was demonstrated when CSF samples were taken from the cisterna magna. Conclusions. Our data suggest that lumbar CSF cytology may be useful when the MRI is equivocal for the presence of metastatic involvement of the spine by medulloblastoma.
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页码:571 / 574
页数:4
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