2个月以下的新生儿脑瘤能确诊的得罕见,即使为良性,其处理也甚困难,因此过去认为在临床实践中无重要意义。本文报告5个病例。近来,由于小儿神经外科的发展,已发现更多病例。据文献报导,2个月以下新生儿脑瘤已有103例(包括本文5例)。其中畸胎瘤53例,髓母细胞瘤6例,室管膜瘤6例,脉络丛乳头瘤5例,颅咽管瘤4例,星形细胞瘤4例,胶质母细胞瘤3例,肉瘤3例,胶质瘤3例,其他16例。位于幕上者(64例)较幕下(15例)为多;多数位于脑深部中线区。而据Gross等报告,2岁以下小儿的脑瘤则多位于幕下。这可能与新生儿脑瘤中最多的畸胎瘤好发于幕上有关。本病的诊断较困难,仅极少数能在手术或尸检 Neonatal brain tumors less than 2 months old can be diagnosed rarely, and even if they are benign, their treatment is very difficult, so in the past it was considered to be insignificant in clinical practice. This article reports 5 cases. Recently, more cases have been discovered due to the development of pediatric neurosurgery. According to reports in the literature, there have been 103 cases (including 5 cases in this article) of neonatal brain tumors below 2 months. There were 53 teratomas, 6 medulloblastomas, 6 ependymomas, 5 choroid plexus papillomas, 4 craniopharyngiomas, 4 astrocytomas, and 3 glioblastomas. There were 3 cases of sarcoma, 3 cases of glioma, and 16 cases. The number of persons located on the screen (64 cases) was more than that of the lower screen (15 cases); most were located in the deep midline region of the brain. According to Gross et al., brain tumors in children under the age of 2 are mostly under the curtain. This may be related to the fact that the most teratoma tumors in neonatal brain tumors occur on the screen. The diagnosis of this disease is more difficult and only a handful can be performed at surgery or autopsy