CT and MRI Findings of Central Neurocytoma

中央神經細胞瘤為一罕見，通常發生在年輕人的良性腦室內腫瘤，可能被誤診為寡樹突膠質瘤或其他腫瘤。本研究報告主要在探索五例經手術證實之中央神經細胞瘤，有關其電腦斷層和磁振造影影像的表現。腫瘤通常依附在腦室中隔而位於側腦室體部和第三腦室，在注射對比劑前的影像，腫瘤在電腦斷層可以是低，中或高密度，在磁振造影相對於大腦皮質可以呈現低，中或高訊號，注射對比劑後腫瘤可呈現輕度或中度的顯影。沒有腫瘤含有鈣化的成份，只有兩個病例其腫瘤內含有類似水泡的部份。有一病例，其腫瘤出血造成次發性腦室出血。我們的結果顯示中央神經細胞瘤仍可由放射線影像上得到診斷，並不一定需含有類似水泡或鈣化的成份，亦可造成腫瘤出血和腦室出血。術前診斷有其重要性，因為它的預後比其他腦室內腫瘤好。

關鍵字

腦，腦室；腦腫瘤；腦腫瘤，電腦斷層；腦腫瘤，磁振造影

並列摘要

Central neurocytoma (CN) is a rare but usually benign cerebral intraventricular tumor of young adults which can be confused with oligodendroglioma and other neoplasms. A retrospective review of the computed tomography (CT) and magnetic resonance imaging findings in five pathologically confirmed cases shows that CN frequently demonstrates a characteristic attachment to the septum pellucidum and confinement to the lateral and third ventricles. The tumor presented as a hypo-, iso- or hyperdense mass on CT and as a low, iso- or high signal intensity mass on Ti-weighted image. It presented as a high-signal intensity mass on T2WI. No tumor contained calcification, and only two of them showed cyst-like areas. In one case, hemorrhage was present in both the tumor and the ventricles. The results indicate that CN can still be suggested radiologically and does not necessarily contain calcification or cyst-like areas. Preoperative diagnosis of CN may prove of value for planning therapy, because this tumor seems to have a better prognosis than other intraventricular tumors.

並列關鍵字

Brain, ventricles ； Brain neoplasms ； Brain neoplasms, CT ； Brain neoplasms, MR

國際替代計量

CT and MRI Findings of Central Neurocytoma

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