手部肌肉发生变异的报道屡见不鲜,且多易误诊;但桡侧屈腕肌变异较少见,现将我科遇之将该变异肌误诊为腱鞘囊肿的一例报告如下,以供借鉴。患者女,19岁,于88年12月9日以左腕部掌侧有一纵行包块2年余,近半年来有触压痛 Hand muscle variation reports are uncommon, and more easily misdiagnosed; but radial wrist flexor muscle variation is less common, now our case of misdiagnosis of the variant muscle as a ganglion case report as follows, for reference. Female patient, 19 years old, on December 9, 88 to the left wrist with a longitudinal palmar palmaries more than 2 years, nearly six months have tenderness