Advancement anoplasty and sacral nerve stimulation: an effective combination for radiation-induced anal stenosis

Abstract

Introduction: Pelvic radiotherapy can cause anal stenosis. Patients can be left with severe rectal evacuatory difficulties, anal fissuring and resistant faecal incontinence. The management of such patients is difficult since surgical treatment can worsen faecal incontinence.

Case study: We report a patient who was treated for recurrent fissuring and faecal incontinence secondary to severe anal stenosis caused by external beam radiotherapy to his prostate. A 74-year-old male patient underwent excision of the fissuring, fibrotic anal mucosa and internal sphincter and was then treated with a broad-based House advancement anoplasty. The patient's fissuring was successfully treated but he still suffered from faecal incontinence. The patient underwent sacral nerve stimulation with significant improvement in all faecal incontinence symptoms.

Conclusion: The use of a novel combination of a House advancement anoplasty and sacral nerve stimulation is a safe and effective treatment rationale for treatment of radiation-induced anal stenosis.