患者 男,43岁,右颈部包块一月余。体检:右颈部胸锁乳突肌内侧有4×2.5cm大小的结节状包块,质硬、边界清楚、无压痛。神经系统检查无异常。术中所见:包块大部分位皮下,小部分在胸锁乳突肌内,有数个小结节,质硬,血运丰富。将肿瘤完整切除,3.5×2.5×2.5cm。病理检查:肿物为椭圆形,表面呈结节状,包膜完整,切面为实质性,灰白色。镜下所见:瘤细胞大,呈椭 Male patient, 43 years old, right neck mass more than a month. Physical examination: the right neck sternocleidomastoid muscle medial 4 × 2.5cm size nodular mass, hard, clear boundary, no tenderness. No abnormal neurological examination. Intraoperative findings: most of the mass of subcutaneous subcutaneous, a small part of the sternocleidomastoid muscle, there are several small nodules, hard, rich blood supply. Tumor resection, 3.5 × 2.5 × 2.5cm. Pathological examination: the tumor was oval, nodular surface, complete capsule, the section is substantial, off-white. Microscopic see: tumor cells, were oval