在解剖一具男性童尸时，发现双侧二腹肌变异，现报道如下：二腹肌前腹左侧长4．10cm、宽1．56cm；右侧长4．20cm、宽1．40cm。起于下颌骨二腹肌窝内止于乳突内后。于颈前正中线两侧，左右二腹肌前腹之间存在异常肌腹。该肌左右对称，颇似二腹肌。其左侧前腹长2．62cm、宽0．62c Dissection of a male child in the body, and found that the bilateral abdominal muscle variation, are reported as follows: the anterior abdominal ventral abdominal long 4.10cm, width 1.56cm; right 4.20cm long and 1.40cm wide. Starting from the mandibular second abdominal muscle nest within the mastoid. On both sides of the anterior midline of the neck, there are abnormal abdominal muscles between the anterior and posterior abdomen. The muscle is symmetrical, similar to the two abdominal muscles. The left anterior abdominal length 2.62cm, width 0.62c