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We report a 35-year-old man with bladder carcinoma developing 2 months after urethral condyloma acuminatum, with an 8-year history of persistent human papilloma virus-58 infection in the urinary tract. DNA was extracted from paraffin-embedded tissue specimens. Human papilloma virus-6 and -58 were detected in the condyloma, whereas human papilloma virus-58 was detected in the carcinoma. In situ hybridization analysis also demonstrated high-risk human papilloma virus-DNA signals in the condyloma and carcinoma tissues. Immunohistochemistry showed that p16-INK4a and mcm-7, surrogate markers of oncogenic human papilloma virus E7 protein, were weakly expressed in the condyloma tissue but were strongly expressed in the carcinoma tissues, suggesting that human papilloma virus-58 was present in the episomal state in the condyloma, whereas human papilloma virus-58 DNA was integrated into the host cells and its infection may have a role in the development of bladder carcinoma. Human papilloma virus-58 was continuously detected in the urethral brushing samples 8 years after treatment for urethral condyloma, and human papilloma virus-58 infection was still persistent in the urethra.

A Case Study of Human Papillomavirus-associated Bladder Carcinoma Developing after Urethral Condyloma Acuminatum