[Neurogenic bladder dysfunction due to tethered spinal cord syndrome in adults: report of two cases]

Two cases of neurogenic bladder dysfunction due to tethered spinal cord syndrome in adults were experienced. They visited our hospital with the complaint of dysuria. The excretory urogram were almost normal. Urodynamic examinations revealed normoactive detrusor-overactive sphincter in case 1, and overactive detrusor-overactive sphincter in case 2. Cystometry-electromyogram demonstrated detrusor-external urethral sphincter dyssynergia in either cases. They were diagnosed as neurogenic bladder due to intraspinal tumor with spina bifida by myelography, computed tomography, and urodynamic examination. Laminectomy, subtotal extirpation of tumor and neurectomy of filum terminale were performed by orthopedists in both cases. The tumor was pathologically diagnosed as lipomas. Postoperatively they showed satisfactory recovery in micturition.