Metastatic involvement of peripheral nerves is considered common in carcinoma of the head and neck with perineural invasion. It is also possible that perineural and endoneural invasion occur in presacral local recurrence. Little is reported about metastasis in pelvic lesions including sacral nerve roots.
Department of Orthopaedics and Rehabilitation Medicine, Fukui University Faculty of Medical Sciences, Shimoaizuki 23, Matsuoka, Fukui 910-1193, Japan. kuchida@fmsrsa.fukui-med.ac.jp
