A case study of human papillomavirus-associated bladder carcinoma developing after urethral condyloma acuminatum - Abstract

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.

Written by:
Kawaguchi S, Shigehara K, Sasagawa T, Kuribayashi M, Junicho A, Hasegawa T, Maeda Y, Namiki M. Are you the author?
Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, 13-1, Takaramachi, Kanazawa, Ishikawa 920-8641, Japan.

Reference: Jpn J Clin Oncol. 2012 May;42(5):455-8.
doi: 10.1093/jjco/hys024

PubMed Abstract
PMID: 22416253

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