内括约肌部分切除治疗肛门内括约肌失弛缓症

Partial internal sphincterectomy for the treatment of internal anal sphincter achalasia in childhood

目的评价内括约肌部分切除术治疗肛门内括约肌失弛缓症的疗效。方法回顾性分析 6例该病患儿的临床表现、钡剂灌肠X线检查、直肠肛管测压及黏膜乙酰胆碱酯酶免疫组化染色结果 ,并对所有患儿进行远期随访。结果本组患儿均表现为顽固性便秘 ,钡剂灌肠X线检查可无狭窄段 ,直肠肛管松弛反射消失 ,黏膜活检乙酰胆碱酯酶组化染色阴性 ,术后病理检查肌丛中有神经节细胞。患儿术后均顺利出院 ,并随访 2～ 7年 ,均能自行排便、控便。结论内括约肌部分切除术治疗肛门内括约肌失弛缓症可取得满意的远期疗效。

Objective To evaluate the long-term results of partial internal sphincterectomy for the treatment of internal anal sphincter achalasia in childhood. Methods The clinical,radiographic,manometrical and histochemical data of 6 cases were reviewed retrospectively. All patients had received partial internal sphincterectomy and were followed-up for 2 to 8 years. Results All patients presented with severe constipation with or without soiling. No stenosis zone of intestine could be noted in 3 patients by barium enema examination. The rectoanal inhibition reflex on rectal balloon inflation was absent in all patients. The normal acetylcholinesterase activity on rectal biopsies was demonstrated by histochemical staining. Ganglion cells within internal anal sphincter was noted in all cases. On follow-up,all patients regained regular bowel habits and are not on any laxatives. Conclusion The long term results of partial internal sphincterectomy for the treatment of internal anal sphincter achalasia in childhood are satisfactory.