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Rapidly Enlarging Pediatric Cortical Ependymoma
Yamasaki, Kouji,Yokogami, Kiyotaka,Yamashita, Shinji,Takeshima, Hideo The Korean Neurosurgical Society 2015 Journal of Korean neurosurgical society Vol.57 No.6
We report a 10-year-old boy with supratentorial cortical ependymoma that rapidly grew in the course of 3 years. He suffered generalized seizures when he was 5 years old; MRI showed a small cortical lesion in the right postcentral gyrus. MRI performed 2 years later revealed no changes. For the next 3 years he was free of seizures. However, at the age of 10 he again suffered generalized seizures and MRI disclosed a large parietal tumor. It was resected totally and he remains free of neurological deficits. The histopathological diagnosis was ependymoma. Pediatric supratentorial cortical ependymomas are extremely rare. We recommend including cortical ependymoma as a differential diagnosis in pediatric patients with cortical mass lesions presenting with seizures and careful follow-up even in the absence of symptoms because these tumors may progress.
Rotational Acetabular Osteotomy
Yuji Yasunaga,Jiro Fujii,Ryuji Tanaka,Shinji Yasuhara,Takuma Yamasaki,Nobuo Adachi,Mitsuo Ochi 대한정형외과학회 2017 Clinics in Orthopedic Surgery Vol.9 No.2
Hip dysplasia is the most common cause of secondary osteoarthritis (OA). To prevent the early onset of secondary OA, Nishio’s transposition osteotomy, Steel’s triple osteotomy, Eppright’s dial osteotomy, Wagner’s spherical acetabular osteotomy, Tagawa’s rotational acetabular osteotomy (RAO), and Ganz’ periacetabular osteotomy (PAO) have been proposed. PAO and RAO are now commonly used in surgical treatment of symptomatic acetabular dysplasia in Europe, North America, and Asia. The aim of this paper is to present the followings: the patient selection criteria for RAO; the surgical technique of RAO; the long-term outcome of RAO; and the future perspectives.