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Peer-reviewedCC BY-NC-NDIJU case reports

Multidisciplinary Treatment of Abdominal Wall Recurrence After Bladder Perforation During Transurethral Resection of a Bladder Tumor

  • Tomoki Kimura1
  • Takaharu Hamada1
  • Shota Umezawa1
  • Gaku Okumura1
  • Shu Gozu1
  • Madoka Kataoka1
  • Shugo Yajima1
  • Yasukazu Nakanishi1
  • Hitoshi Masuda1
  1. 1Department of Urology National Cancer Center Hospital East Kashiwa Chiba Japan.
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Abstract

Introduction

Sarcomatoid urothelial carcinoma is a rare, highly aggressive bladder cancer subtype. We report the first case of abdominal wall implantation of sarcomatoid urothelial carcinoma after bladder perforation during transurethral resection of a bladder tumor, followed by recurrence at the open repair site requiring further resection.Case presentation

A 73-year-old woman underwent emergency transurethral resection for a rapidly enlarging bladder tumor complicated by full-thickness perforation. Histopathology revealed sarcomatoid urothelial carcinoma. During intravesical bacillus Calmette-Guérin therapy, she developed a malignant right lower abdominal wall mass attributed to tumor implantation. Enfortumab vedotin plus pembrolizumab did not prevent progression. Preoperative radiotherapy was followed by en bloc resection with partial cystectomy and anterolateral thigh flap reconstruction. Pathology demonstrated extensive treatment-related necrosis and negative margins. She remained recurrence-free at 11 months.Conclusion

For localized recurrence, aggressive multidisciplinary treatment incorporating radical local resection and reconstructive surgery may provide local disease control in selected patients without metastasis.

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Cite

BibTeXRIS
BibTeX
@article{kimura2026multidisciplinary,
  title = {{Multidisciplinary Treatment of Abdominal Wall Recurrence After Bladder Perforation During Transurethral Resection of a Bladder Tumor}},
  author = {Tomoki Kimura and Takaharu Hamada and Shota Umezawa and Gaku Okumura and Shu Gozu and Madoka Kataoka and Shugo Yajima and Yasukazu Nakanishi and Hitoshi Masuda},
  journal = {IJU case reports},
  year = {2026},
  month = oct,
  doi = {10.1002/iju5.70288},
  url = {https://europepmc.org/article/PMC/PMC13717598},
  note = {CC BY-NC-ND},
}
RIS
TY  - JOUR
TI  - Multidisciplinary Treatment of Abdominal Wall Recurrence After Bladder Perforation During Transurethral Resection of a Bladder Tumor
AU  - Tomoki Kimura
AU  - Takaharu Hamada
AU  - Shota Umezawa
AU  - Gaku Okumura
AU  - Shu Gozu
AU  - Madoka Kataoka
AU  - Shugo Yajima
AU  - Yasukazu Nakanishi
AU  - Hitoshi Masuda
PY  - 2026
DA  - 2026/10/29
JO  - IJU case reports
DO  - 10.1002/iju5.70288
UR  - https://europepmc.org/article/PMC/PMC13717598
AB  - Introduction  Sarcomatoid urothelial carcinoma is a rare, highly aggressive bladder cancer subtype. We report the first case of abdominal wall implantation of sarcomatoid urothelial carcinoma after bladder perforation during transurethral resection of a bladder tumor, followed by recurrence at the open repair site requiring further resection.Case presentation  A 73-year-old woman underwent emergency transurethral resection for a rapidly enlarging bladder tumor complicated by full-thickness perforation. Histopathology revealed sarcomatoid urothelial carcinoma. During intravesical bacillus Calmette-Guérin therapy, she developed a malignant right lower abdominal wall mass attributed to tumor implantation. Enfortumab vedotin plus pembrolizumab did not prevent progression. Preoperative radiotherapy was followed by en bloc resection with partial cystectomy and anterolateral thigh flap reconstruction. Pathology demonstrated extensive treatment-related necrosis and negative margins. She remained recurrence-free at 11 months.Conclusion  For localized recurrence, aggressive multidisciplinary treatment incorporating radical local resection and reconstructive surgery may provide local disease control in selected patients without metastasis.
SN  - 2577-171X
ER  -