Kentaro Mimatsu

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STUDY DESIGN A very rare case of intramedullary spinal cord germinoma is described. OBJECTIVE To increase knowledge about the pathogenesis and treatment of intramedullary spinal cord germinoma. SUMMARY OF BACKGROUND DATA Primary intramedullary spinal cord germinoma is very rare and only two cases have been previously reported. METHODS A case of(More)
Paraplegia or paraparesis is uncommon in patients with neurofibromatous scoliosis. The main causes of spinal cord compression in neurofibromatosis are vertebral angulation, vertebral subluxation, and tumorous lesions around the spinal cord. We report a rare case of paraparesis due to spinal cord compression by a rib penetrating the spinal canal in a patient(More)
The relation between improvement of myelopathy achieved by surgery and postoperative spinal cord morphologic changes was investigated by magnetic resonance imaging in 51 patients with cervical myelopathy. In 22 patients, the cord indentation disappeared completely (Type I), in 23 it partially disappeared (Type II), and in 3 it remained unchanged (Type III).(More)
Chemonucleolysis has recently become an established treatment for intervertebral disc protrusion. However, the exact mechanism of chemonucleolysis is still unknown. If mechanisms of chemonucleolysis include diminution of intradiscal pressure followed by subsequent regeneration of the nucleus pulposus, then a more selective enzyme for glycosaminoglycan,(More)
A patient with idiopathic osteolysis in the thoracolumbar spine who developed severe chylothorax after a spinal operation is described. Irradiation and pleural adhesion therapies with minocycline and bleomycin were undertaken to control the chylothorax. Pleural adhesion therapy with bleomycin proved effective in treating this patient. Magnetic resonance(More)
We report four cases of massive tongue swelling after spinal surgery. Swelling resulted from the position of the spine during surgery (flexed thoracic-cervical position), fixation of the endotracheal tube, additional surgical gauzes packed around the endotracheal tube, and compression of the base of the tongue. Swelling, which causes obstruction of the(More)
STUDY DESIGN Pinealectomy induces experimental scoliosis in chickens. This study analyzed the natural course and characteristics of the scoliosis that developed after pinealectomy. OBJECTIVES To investigate the natural course of experimental scoliosis after pinealectomy in chickens and determine its similarity to idiopathic scoliosis in humans. SUMMARY OF(More)
Factors which affected the severity of scoliosis induced by rib resection were examined. Seventy chickens were divided into a rib transection group and a rib resection group with seven subgroups, according to the number of ribs treated and the age at surgery, and examined radiographically until 20 weeks postoperatively. Rib transection group chickens showed(More)
To determine the functional changes occurring in the early period after the development of chronic cord compression, an ossification of the ligamentum flavum model, which is a model of chronic cord compression, was created in domestic rabbits using bone morphogenetic protein, and monitored evoked spinal cord potentials. Sixty-seven rabbits were used for(More)
We report the development of a new laminoplasty for the thoracic and lumbar spine. In this method, after two or three laminae are subjected to en bloc laminectomy using a surgical air drill, median longitudinal incisions are made in the laminae from the ventral side with a microsurgical saw and then the resected laminae are put back in place, like pitching(More)