Seventeen specimens ( 68.0%) with detrusor hyperreflexia had disorganized muscle nuclear orientation. In contrast, a significantly diminished muscle bundle size was seen in detrusor hyporeflexia/ areflexia. 逼尿肌反射亢进组中有17例(68.0%)可见平滑肌细胞核排列紊乱,而反射低下/无反射组肌束明显细小。