Abstract
Arecent review of the records of the Division of Radiotherapy, Children's Hospital Medical Center, and of the Children's Cancer Research Foundation of Boston has disclosed 5 patients who had a malignant neoplasm which appeared to be unusual because of its histologic characteristics and its clinical course in relation to the site of origin at diagnosis. In each child, the epidural space of a portion of spinal cord was involved and the adjacent paravertebral soft tissues were infiltrated to varying degrees. Symptoms of cord compression were due to extradural pressure. Except for a congenital abnormality of a vertebral body, one patient exhibited no radiographic evidence of bone alteration at the local site. The other patients were found to have radiographic changes in the neural arch of a vertebral body at the site of tumor involvement. These changes were due to pressure by extrinsic tumor and secondary bone reaction. Case Reports CASE I: M. K., a girl, was born with a lumbar hemivertebra at L-2 and resulta...
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