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患者男,12岁.因右颈部无痛性肿块1年余,明显增大3个月于1997年6月30日来我科就诊.缘于1996年5月发现右颈部皮下有一黄豆大小硬结,不痛不痒,未予重视.近3月硬块明显增大,挤压时稍有胀痛由其家长送来我科要求手术治疗.检查:右颈部胸锁乳突肌中前缘于皮下有一1.5cm×3cm大小包块,似橄榄状,境界清楚,仅部分与皮肤粘连,质地硬,无压痛,局部肤色正常.实验室检查:血、尿、粪常规及肝、肾功能检测均正常.电镜检查:瘤细胞散在分布,细胞多边形,细胞间无粘连.胞浆丰富,浆内有大量大小不等的溶酶体颗粒,电子密度均匀,形态不规则;浆内多见髓鞘样小体及细胞碎片,细胞器少见.肿瘤细胞核呈卵圆形,常染色质丰
Male patient, 12 years old. Painless mass in the right neck for more than 1 year, significantly increased 3 months to come to our department on June 30, 1997. Because in May 1996 it was found that there was a size of soybean in the right neck. Induration, superficial, not paid attention to. In the past March, the lump obviously increased. When the extrusion was slightly pained, it was sent by our parents. Our department required surgery. Check: The front edge of the right sternocleidomastoid muscle Under the skin there is a 1.5cm × 3cm size mass, like olive, realm clear, only part of the adhesion with the skin, hard texture, no tenderness, local skin color is normal. Laboratory tests: blood, urine, fecal routine and liver and kidney function tests All normal. Electron microscopic examination: tumor cells scattered in the distribution, cell polygon, no adhesion between cells. The cytoplasm is abundant, there are a large number of lysosome particles in the size of the plasma, the electron density is uniform, the shape is irregular; the myelin is more common in the pulp. Small bodies and cell debris, rare organelles. The tumor cell nuclei oval, often chromatin abundance