Hiroki Kanyama

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We report two cases of perianal endometriosis in which we were greatly assisted by endoanal ultrasonography. Patient 1 was a 43-year-old woman with perianal pain. Endosonography showed a hypoechoic mass in the anterior perianal region without involvement of the anal sphincter. Local excision was performed under spinal anesthesia without damage to the anal(More)
This study was undertaken to evaluate the accuracy of endoanal ultrasonography for preoperative assessment of anal fistula, with special reference to the difference between acute and chronic fistula. The subjects comprised 401 patients treated for acute or chronic anorectal sepsis of cryptoglandular origin during the period January through December 2005.(More)
This study was undertaken to determine the incidence of and risk factors for anal incontinence after fistulotomy for intersphincteric fistula-in-ano. We also evaluated the role of anal manometry in preoperative assessment of intersphincteric fistula. A prospective, observational study was undertaken in 148 patients who underwent fistulotomy for(More)
This study compared the clinical and physiological results of non-sphincter splitting fistulectomy (N-SSF) with those of sphincter splitting fistulotomy (SSF) for treatment of high trans-sphincteric fistula-in-ano. A prospective, observational study was undertaken in 70 consecutive patients with high trans-sphincteric fistula treated by SSF (n = 35) or(More)
Diese Studie wurde zur Überprüfung der Zuverlässigkeit des endoanalen Ultraschalls bei der präoperativen Beurteilung von Analfisteln durchgeführt, insbesondere im Hinblick auf die Unterschiede zwischen akuten und chronischen Fisteln. Untersucht wurden 401 Patienten, die im Zeitraum von Januar bis Dezember 2005 wegen akuter oder chronischer anorektaler(More)
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