人的嘴唇不分男女,只有上下两片,其红唇部中段厚而两侧逐渐变薄,于口角处相连围成一个美的嘴唇。但是,有的人上唇当闭嘴(不是抿嘴)或微笑时可见双层唇缘,其间有一明显的沟状唇线,医学上称之为重唇畸形。重度重唇其粘膜松弛下垂,即便嘴唇紧闭也是“欲盖弥彰”,由于唇系带的中线附着将重唇分隔成左右两半,这是上唇重唇畸形的另一特征。因此,重度重唇粗看起来以为是不完全型唇裂(俗称缺子口),或像是长了两个卵形瘤子,发病年龄多在十五岁前后。经手术切除下来的重唇组织均为粘膜下粗大的增生性腺体,剖开腺体见有粘液、可能为粘液腺。重唇畸形患者均无家族遗传史及明显的获得性病因。 Men’s lips, regardless of men and women, only two up and down, the middle of the thick red lips and thin on both sides gradually, at the corner connected to form a beautiful lips. However, some people have a double lip on the upper lip when they shut up (not pouting) or smile. There is a clear groove lip between them, medically called heavy lip deformity. Severe heavy lips its mucosal sagging, even if the lips are closed, “Lidi Mi Chang”, due to the midline of the lip lace attached to the heavy lip is divided into about two and a half, which is another feature of the upper lip deformity. Therefore, the heavy heavy lips seems to think it is incomplete cleft lip (commonly known as missing mouth), or as long as two oval-shaped tumor, the onset of age more than 15 years old. Surgical removal of the heavy lip tissue are thick submucosal proliferative glands, cut open the gland see mucus, mucus may be glands. Patients with severe lip deformity had no family history and significant acquired cause.