Bladder cancer invasion along a tension‐free vaginal mesh

Introduction The effect of synthetic mesh after pelvic organ prolapse surgery on the progression of bladder cancer remains unclear. Case presentation A 79‐year‐old woman who underwent a tension‐free vaginal mesh procedure 8 years prior was diagnosed with carcinoma in situ of the bladder. Although intravesical Bacillus Calmette–Guérin therapy was started, the tumor rapidly became muscle invasive. Laparoscopic radical cystectomy was performed following radiochemotherapy; however, the tumor extended to the left internal obturator muscle along the mesh arm. Pathological findings showed desmoplastic high‐grade urothelial carcinoma infiltrating around the mesh. Finally, cancer recurred rapidly in the left internal obturator muscle. Conclusion Synthetic mesh can become an abnormal anatomical pathway for tumor infiltration. Therefore, in high‐risk bladder cancer patients who underwent a tension‐free vaginal mesh procedure, radical cystectomy should be performed without delay before the tumor invades the perivesical tissue.

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