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Case Reports in Pathology
Volume 2013, Article ID 486312, 3 pages
Case Report

Squamous Cell Papilloma of the Urinary Bladder Endoscopically Mimicking Cancer

1Laboratory of Histology, School of Medicine, Aristotle University, 54006 Thessaloniki, Greece
2Department of Urology, School of Medicine, Aristotle University, 54635 Thessaloniki, Greece
3Department of Histopathology, Euromedica General Clinic, 54645 Thessaloniki, Greece

Received 4 July 2013; Accepted 23 August 2013

Academic Editors: C.-C. Chiu and I. Meattini

Copyright © 2013 Dimosthenis Miliaras et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Squamous cell lesions of the urinary bladder are generally rare. Herein we describe a case of 74-year-old male patient with a benign squamous cell papilloma. Histologically, the tumor presented extensive keratinization at its surface and showed no nuclear atypia or stromal invasion. The tumor cells were negative for HPV DNA. These lesions are extremely rare, and even though they are considered benign and non-HPV related, they should be followed, since recurrence has been reported.