Successful posterior urethroplasty with gracilis muscle flap interposition and a V[sbnd]Y gluteal flap of the perineal wound gap following abdominal-perineal resection: A case report

Abstract

An iatrogenic urethral perineal fistula can cause challenging problems for surgical reconstruction. In most cases, treatment is performed in three steps: double-diversion urinary and intestinal diversion, closure, and diversion. The augmented posterior urethroplasty interposition with a gracilis muscle function flap for the repair of the perineal gap was successful. Case presentationWe reviewed a patient aged 42 years old male who presented to the urology department with leakage of urine per perineum after abdominal perineal resection and end colostomy due to anal-rectal malignancy 2 months earlier. He subsequently had a gapped perineal wound post abdominal-perineal resection (APR). Suprapubic Cystostomy and urethral catheter and a cystoscope showed a normal verumontanum, and there was a left para-verumontanum fistula approximately 3 cm in size that communicated with the perineum gapped wound. Tissue histology revealed chronic inflammation. Augmentation posterior urethroplasty with interposition of the gracilis muscle flap. Clinical discussionUrethral perineal fistulas have different etiologic origins, such as inflammatory, neoplastic, traumatic, or iatrogenic injury. Treatment is performed in three steps: double diversion urinary and intestinal, closure, and no diversion. In our case, the perineal gapped wound allowed us to access the posterior urethra and this potential space for gracilis muscle interposition, aiming to facilitate fistula repair and cover perineal gap wound repair. ConclusionPosterior urethral perineal fistulas can be repaired by a gracilis muscle flap, providing acceptable treatment results. However, more research is needed in fistula studies evaluating patients' sexual and urinary efficiency to achieve more accurate results.