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Updated: Dec 13, 2025
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Expression of PD-L1 and CTLA-4 in female urethral carcinoma
Sahoko Ninomiya1, Takashi Kawahara1, Taku Mochizuki1
1Departments of Urology and Renal Transplantation Yokohama City University Medical Center Yokohama Kanagawa Japan.
Introduction:
Although the tumors are often easily detected, a considerable number of patients with female urethral carcinoma are diagnosed in an advance stage. Thus, no evidence-based therapeutic approach has been established. We herein report our experience in the treatment of three female patients with urethral carcinoma. We also examined the expression of PD-L1 and CTLA-4.
Case Presentation:
Three female patients pathologically diagnosed with urethral carcinoma, including urothelial carcinoma, squamous cell carcinoma, and adenocarcinoma, between 2013 and 2017 were analyzed in this study. Two patients underwent urethrectomy with cystostomy. Immunohistochemistry was performed to assess the levels of PD-L1 and CTLA-4 expression in patients with urethral carcinoma. Eleven control cases of urethral carcinoma tissue were also stained.
Conclusion:
This study revealed the expression of PD-L1 and CTLA-4 in female urethral carcinomas.
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