Primary primitive neuroectodermal tumor of the urinary bladder: A case report

Yasuyuki Kobayashi, Kenji Nishimura, Taigo Kato, Hidefumi Kishikawa, Yasuji Ichikawa


We report a rare case of primary primitive neuroectodermal tumor (PNET) of the urinary bladder. An 85-year-old man with hormone refractory prostate cancer was presented with gross hematuria. Abdominal computed tomography showed a tumor occupying the right lateral portion and neck of the bladder wall, while a cystoscopic examination revealed a bleeding, sessile globular tumor with no papillary features. Transurethral resection of the bladder tumor was performed. Histopathological results showed a small round cell tumor forming rosettes, further positive immunoreactivities for some neural markers and MIC gene product (CD99), which indicated PNET of the bladder. Four months after surgery, PNET of the bladder recurred with rapid growth and the patient died of tumor. To our knowledge, there have been only 8 such cases reported.


Full Text:



Journal of Solid Tumors

ISSN 1925-4067(Print)   ISSN 1925-4075(Online)

Copyright © Sciedu Press

To make sure that you can receive messages from us, please add the '' domain to your e-mail 'safe list'. If you do not receive e-mail in your 'inbox', check your 'bulk mail' or 'junk mail' folders.