The results of MRI and MIBG scintigraphy performed on the spine of 14 children with neuroblastoma are reported. In 6 cases of diffuse spinal bone marrow tumor infiltration, diagnosis is easier with MIBG scintigraphy than with MRI. In 5 cases, MRI detected hyposignal of the vertebral body without any spinal abnormality on MIBG scintigraphy. A discussion of the reasons for negative MIBG scintigraphy is presented and in these 5 cases, it is suggested that a lateral view of MIBG scintigraphy and HMDP-Tc99m scintigraphy may be performed, even vertebral body biopsy in order to assess bone marrow tumoral infiltration.

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