Villous Tumor of the Urinary Bladder Resembling Low-grade Mucinous Neoplasm of the Appendix

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• 作者：Ayako Ito^a ; ^{itouayakoinkagawa@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Yuma Sakura^a ; Mikio Sugimoto^a ; Yoshiyuki Kakehi^a ; Naoto Kuroda^b
• 关键词：Urinary bladder tumor ; Mucinous neoplasm ; Villous tumor ; Appendiceal-type
• 刊名：Urology Case Reports
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：6
• 期：Complete
• 页码：4-6
• 全文大小：1765 K

文摘

Mucinous neoplasms of the urinary tract are very rare. We present a 63-year-old-women who had a sessile papillary villous tumor in urinary bladder. Although transurethral resection of the bladder tumor (TURBT) was performed, the villous tumor repetitively recurred and gradually spread to the entire surface of bladder lumen. Histopathologic and immunohistochemical examination showed that the lesion was very similar to low-grade mucinous neoplasm arising in appendix vermiformis. There are no reports on appendiceal metaplasia of urinary bladder mucosa. In this case, we describe this unprecedented neoplasm as “villous tumor of the urinary bladder resembling low-grade mucinous neoplasm of the appendix.”