Bilateral Rotational S Flap Technique for Preventing Restenosis in Patients With Severe Circular Anal Stenosis: A Review of 2 Cases

Anal stenosis is a late hemorrhoidectomy complication. Sphincterotomy and various anoplasty techniques are used for treatment severe anal stenosis, such as the C flap, House flap, U flap, and rotational S flap, but no procedure is ideal for every patient. We review 2 cases of severe circular anal stenosis. Their complaints included narrow caliber of the stool and feeling unsatisfied defecation. Excision of scar tissue using the circular technique was followed by reconstruction using the bilateral rotational S flap procedure. At the 1-year follow-up, the patient had complaints about neither defecation nor pain, and no longer needed laxative agents. In conclusion, the bilateral rotational S flap technique should be considered as a viable treatment because it can also prevent the occurrence of restenosis, especially given the consideration of adequate blood supply.

Surgical management of anal stenosis: anoplasty with or without sphincterotomy / Tratamento cirúrgico da estenose anal: anoplastia com ou sem esfincterotomia

ABSTRACT Aim: Anal stenosis is an uncommon complication of anorectal surgery, mostly resulting from circumferential hemorrhoidectomy or resection of the skin tag in surgical management of chronic anal fissure. The aim of anoplasty is to restore normal function to the anus by dividing the stricture and widening the anal canal. Internal sphincterotomy may cause gas incontinence and if we manage the stenosis without sphincterotomy it could be failed. Could we use anoplasty without sphincterotomy? Method: The patients with anal stenosis were assigned in to two groups. The first group underwent Y-V anoplasty without partial lateral internal sphinctrotomy and the second one underwent Y-V anoplasty with partial lateral internal sphinctrotomy. Result: A total of 25 patients (10 male and 15 female) underwent anoplasty, 14 without partial lateral internal sphincterotomy and 11 patients with partial lateral internal sphincterotomy. The healing rate of stenosis was 91% and 93% in groups undergoing anoplasty without partial lateral internal sphinctrotomy and anoplasty with partial lateral internal sphictrotomy, respectively (p value 0.69). There was no significant change in both groups for post-operative incontinence complaints. Conclusion: The healing rate of anal stenosis was the same in the patients who underwent Y-V anoplasty with or without partial lateral internal sphinctrotomy. There was no significant change in post-operation incontinence between the two groups. Therefore, Y-V anoplasty would be a safe and simple surgical method in selected patients. Partial lateral internal sphinctrotomy procedure has been noticed in individual cases.

RESUMO Objetivo: A estenose anal é complicação incomum da cirurgia anorretal, sendo principalmente resultante de uma hemorroidectomia circunferencial ou ressecção do pólipo cutâneo no tratamento cirúrgico da fissura anal crônica. O objetivo da anoplastia é a restauração da função normal do ânus, mediante a divisão da constrição e alargamento do canal anal. A esfincterotomia interna pode causar incontinência gasosa; e se tratarmos a estenose sem esfincterotomia, poderá ocorrer insucesso. Poderíamos usar a anoplastia sem esfincterotomia? Método: Os pacientes com estenose anal foram designados para dois grupos. O primeiro grupo foi tratado com anoplastia em Y-V sem esfincterotomia interna lateral parcial, e o segundo grupo foi tratado com anoplastia em Y-V com esfincterotomia interna lateral parcial. Resultado: No total, 25 pacientes (10 homens e 15 mulheres) foram tratados com anoplastia-14 sem esfincterotomia interna lateral parcial, e 11 com esfincterotomia interna lateral parcial. Os percentuais de cura da estenose foram de 91% e 93% nos grupos tratados com anoplastia sem esfincterotomia interna lateral parcial e com esfincterotomia interna lateral parcial, respectivamente (p = 0,69). Não ocorreu mudança significativa nos dois grupos com relação às queixas de incontinência pós-operatória. Conclusão: O percentual de cura da estenose anal foi igual nos pacientes tratados com anoplastia em Y-V com ou sem esfincterotomia interna lateral parcial. Não foi observada mudança significativa na incontinência pós-operatória entre os dois grupos. Portanto, a anoplastia em Y-V seria um método cirúrgico seguro e simples em pacientes selecionados. Em casos isolados, o procedimento de esfincterotomia interna lateral parcial tem sido observado.

Anal Stenosis Following Sclerotherapy Managed by Anoplasty.

Anal stenosis is a rare but serious disabling condition following ano rectal surgery, anal trauma, carcinoma, post radiotherapy and Crohn's disease. 90% of the anal stenosis is causes by overzealous haemorrhoid surgery. Stricture following sclerotherapy is also mentioned in the literature. In our cases disabling anal stenosis was for last 1 year following sclerotherapy of haemorrhoids leading to severe anal stenosis with diaphragmatic ring like annular stenosis. A formal Y-V anoplasty was performed which relieved the patients of their symptoms leading to satisfactory bowel movements.

Repair of Anorectal Malformation

Major advances in the management of anorectal malformations have been achieved during the last 20 years. Alberto Pena introduced the posterior sagittal anorectoplasty (PSARP) in 1982. He divided all the sphincteric muscles at the exact posterior midline and fully exposed the crucial anatomy. He was able to manage the associated fistula under direct vision with minimal urinary tract injury. The rectum could be placed in the middle of the sphincteric muscle complex. Even with PSARP by Alberto Pena himself, only 37.5% of all cases were considered totally continent. Anorectal malformation is still acontinuing challenge for the pediatric surgeons.

Anorectoplasty via posterior sagittal approach in treatment of anorectal malformation of medium and highly seated: report of 44 cases / 第三军医大学学报

Objective To report 44 cases of meta-superior position anorectal malformation in different age therapied by posterior sagittal anorectoplasty(PSARP) operation, and to discuss possibility of one-stage anorectoplasty via posterior sagittal approach in neonate. Methods The clinical data of 44 cases meta-superior position anorectal malformation,which were treated by PSARP,were studied retrospectively. Results Of 44 cases, 15 were treated by colon stoma in neonate, then PSARP was executed after 3～7 months. And the rest 29 cases (9 in neonate and 20 in 2 months～9 years) were operated with one-stage anorectoplasty via posterior sagittal approach. Among 21 children followed from post-operration 6 months to 5 years, 18 cases of defecation clinical score were fineness. Conclusion The curative effects of PSARP in neonate to meta-superior position anorectal malformation is satisfactory. If the neonate is in good condition, one-stage anorectoplasty via posterior sagittal approach could be executed in infant, and favourable defecate function could be remain.

Comparison of C-anoplasty and House Shaped Advancement Flap in Anal Stenosis

PURPOSE: The surgical treatment of anal stenosis includes internal sphincterotomy, rotaton flap and advancement flap according to the stenosis degree, recently, Christensen performed house shaped advancement flap and reported fair results. We compared and analyzed the surgical methods and results in patients with moderate and severe anal stenosis who underwent house shaped advancement flap and C-anoplasty. METHODS: We have performed this study with 6 cases using the house shaped advancement flap and 6 cases using the C-anoplasty. The out come was assessed by clinical characteristics, surgical method, operation time, duration of hospitalization, healing time, postoperative complications, results. RESULTS: The average operation time was 38 min in those house shaped advancement flap cases and 63 min in C-anoplasty cases. The average time of hospitalization was 6 days and 9 days, respectively, and the average time of healing was 28 days and 46 days, respectively. In those house advancement flap cases, surgery could be done in 2 directions at the same time in 4 cases and 3 directions in 2 cases; as for those C-anoplasty cases, surgery could be done in 1 direction in 4 cases and 2 directions in 1 case. Two complications were observed in C-anoplasty, one flap infection and one flap necrosis, and in house shaped advancement flap, no complication was observed. CONCLUSIONS: House shaped advancement flap have several advantages compared to the C-anoplasty, and since house shaped advancement flap could be performed in 2 to 3 directions or even 4 directions at the same time, the anus could sufficiently expanded in severe anal stenosis patients. The house shaped advancement flap might be one of the good method in treating anal stenosis.