Roedel R, Christen H J, Laskawi R
Department of Otorhinolaryngology, University of Göttingen, Germany.
Neuropediatrics. 1998 Aug;29(4):215-9. doi: 10.1055/s-2007-973564.
Congenital unilateral lower lip palsy (CULLP) with or without additional malformations is a well-known limited variation of congenital unilateral facial palsy. Some electromyographical studies referred to a hypoplasia or an aplasia of the depressor anguli oris muscle. However, no attempt has been made to investigate the cause for this mimical disorder by using imaging procedures. We examined the occurrence of the depressor anguli oris muscle in 7 patients presenting with congenital lower lip palsy by using B-scan sonography. In 6 of the patients, the muscle was well-developed on the affected side, but only in one patient the muscle seemed to be completely absent. Thus, in the majority of cases, hypoplasia or aplasia of the depressor anguli oris muscle is obviously not the reason for this mimical disorder. This observation may be important with regard to a possible therapeutic management.
伴有或不伴有其他畸形的先天性单侧下唇麻痹（CULLP）是先天性单侧面瘫中一种广为人知的有限变异。一些肌电图研究提到口降肌发育不全或未发育。然而，尚未有人尝试通过影像学检查来探究这种面部疾病的病因。我们通过B超检查了7例先天性下唇麻痹患者口降肌的情况。其中6例患者患侧的肌肉发育良好，只有1例患者的肌肉似乎完全缺失。因此，在大多数情况下，口降肌发育不全或未发育显然不是这种面部疾病的病因。这一观察结果对于可能的治疗管理或许具有重要意义。
