Pseudoclaudication syndrome caused by a tumour of the cauda equina.

A typical case of pseudoclaudication syndrome (neurogenic intermittent claudication), where the cause of the lumbar spinal canal narrowing was an intraspinal neoplasm, is reported. A neoplasm as the cause of this syndrome seems to be very rare, possibly because of the progressive nature of the space-occupying lesion and hence the rapid development of other predominant symptoms.