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Korean J Urol Oncol > Volume 14(1); 2016 > Article
The Korean Journal of Urological Oncology 2016;14(1): 43-46.
Extra-gastrointestinal Stromal Tumor on the Inner Urinary Bladder Wall
Jun Nyung Lee 1, Se Yun Kwon 2, Jeongshik Kim 3, Ghil Suk Yoon 4, Eun Sang Yoo 1, Hyun Tae Kim 1
1Department of Urology, School of Medicine, Kyungpook National University, Daegu, 2Department of Urology, School of Medicine, Dongguk University, Gyeongju, 3Department of Pathology, Yeungnam University Hospital, Daegu, 4Department of Pathology, School of Medicine, Kyungpook National University, Daegu, Korea
Published online: April 30, 2016.
This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
A gastrointestinal stromal tumor is the most common mesenchymal tumor of the gastrointestinal tract, and is diagnosed on the basis of the combined expression of CD34 and CD117 (C-kit protein). An extragastrointestinal stromal tumor of the urinary bladder is a very rare neoplasm. In this report, we describe a case of an extragastrointestinal stromal tumor originating from the inner surface of the urinary bladder. A 46-year-old man presented with an incident bladder mass, and he was diagnosed with an extragastrointestinal stromal tumor after transurethral resection of the bladder tumor. A tumor on the inner urinary bladder wall is an unusual presentation of an extragastrointestinal stromal tumor. The patient is doing well with no recurrence at 18 months after surgery. (Korean J Urol Oncol 2016;14:43-46)
Key Words: Gastrointestinal stromal tumors; Urinary bladder
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