患者，女，５３岁，八年前发现右颌下肿物约１ｃｍ×１ｃｍ，逐年增大，近二年明显增大约５ｃｍ×５ｃｍ，无甲状旁腺功能亢进症状。查体：于右侧胸锁乳突肌前侧触及一个５ｃｍ×５ｃｍ质硬包块，边界欠清，形态不规则，表面光滑，活动度差，不随吞咽运动，无压痛。彩超检查：? The patient, female, was 53 years old. Eight years ago, the right submandibular mass was found to be about 1cm x 1cm, which increased year by year and was significantly increased by approximately 5cm x 5cm in the past two years without symptoms of hyperparathyroidism. Physical examination: A 5cm × 5cm hard mass was touched on the anterior side of the right sternocleidomastoid muscle. The boundary was less clear, the shape was irregular, the surface was smooth, the activity was poor, and the movement was not swallowed. There was no tenderness. Ultrasonic inspection:?