Two Cases of Asymmetric Crying Facies : Congenital Agenesis of ?the Depressor Anguli Oris Muscle

J Korean Neurol Assoc > Volume 13(2); 1995 > Article

Journal of the Korean Neurological Association 1995;13(2): 334-340.

비대칭성 울음 안면을 보인 2례 : 구각하체근의 선천성 발육부전

박성파, 김지언, 김정일, 정보우, 김종열, 서정규, 현명철

경북대학교 신경과. 소아과

Two Cases of Asymmetric Crying Facies : Congenital Agenesis of ?the Depressor Anguli Oris Muscle

Sung Pa Park, M.D., Ji Eun Kim, M.D., Jung Il Kim, M.D, Bo Woo Jung, M.D., Jong Yeol Kim, M.D., Chung Kyu Suh, M.D., Myung Chul Hyun, M.D.

Department of Neurology, Pediatrics, Scholl of Medicine, KyungPook National University

Abstract

Asymmetric crying facies are caused by unilateral weakness of the depressor muscles of lower lip, which is most obvious during crying and is associated with other congenital anomalies, especially congenital heart disease. This sign results from partial paralysis of facial nerve, specifically the ramus marginalis mandibulae, or congenital agenesis of the depressor anguli oris muscle (DAOM). We report two patients with congenital hypoplasia or absence of DAOM proved by electromyography, who have not cardiac anomalies