ミウラ　イサム   Miura Isamu   三浦　勇    所属   医学部 医学科（東京女子医科大学病院）    職種   助教
論文種別	症例報告
言語種別	英語
査読の有無	査読あり
表題	A Rapidly Growing Cervical Meningeal Melanocytoma with a Dumbbell-Shaped Extension.
掲載誌名	正式名：World neurosurgery 略　 称：World Neurosurg ISSNコード：18788769/18788750
掲載区分	国外
巻・号・頁	134,pp.90-93
著者・共著者	Miura Isamu, Kubota Motoo, Momosaki Oji, Nyui Miki, Takebayashi Kento, Kawamata Takakazu, Yuzurihara Masahito
発行年月	2020/02
概要	BACKGROUND:Meningeal melanocytoma is a rare benign lesion found in the central nervous system. Preoperative diagnosis of meningeal melanocytoma is often a diagnostic challenge, as the clinical and neurologic features are often nonspecific. Various characteristics, including the natural course of this tumor, remain poorly understood. We report a case of a rapidly growing dumbbell-shaped melanocytoma compressing the spinal cord that manifested 2 years after a tumor was identified at the right C2-C3 foramen.CASE DESCRIPTION:A 40-year-old, right-handed man presented with a 2-month history of right palm and left leg numbness. Magnetic resonance imaging of the cervical spine showed a dumbbell-shaped tumor at the right C2-C3 foramen with extension into the central canal. The lesion was hyperintense on T1-weighted images and hypointense to isointense on T2-weighted images. Contrast enhancement was not visualized clearly. Fluorodeoxyglucose-positron emission tomography with computed tomography showed intense uptake in the lesion. The patient's history included a small lesion that had been localized at the right C2-C3 foramen 2 years before admission. The pathologic findings were consistent with melanocytoma.CONCLUSIONS:It is important to include meningeal melanocytoma in the differential diagnosis of dumbbell tumors, as meningeal melanocytomas may show rapid progression.
DOI	10.1016/j.wneu.2019.10.150
PMID	31678313