High-grade Neuroendocrine Carcinoma With Focal Squamous Metaplasia of Renal Pelvis Associated With Renal Calculus: Study of a Case

• Main Authors: Yan-Ping Huang, Bin Chen, Xiang-Zhou Sun, Yan Guo, Shi-Cong Yang, Chun-Hua Deng, Yi-Ran Huang
• Format: Article
• Language: English
• Published: Elsevier 2014-05-01
• Series: Urology Case Reports
• Subjects: Neuroendocrine carcinoma; Renal pelvis; Squamous metaplasia; Kidney calculi
• Online Access: http://www.sciencedirect.com/science/article/pii/S2214442013000302

Mixed neuroendocrine and non-neuroendocrine type of tumor in renal pelvis is rare and presents a high-grade malignancy. We present a case report that a 57-year-old man had no history of small cell cancer but presented a high-grade neuroendocrine carcinoma with focal squamous metaplasia and multiple stones simultaneously in the right renal pelvis. The patient underwent nephroureterocystectomy 9 months before this presentation, with evidence of multiple metastatic tumors in various parts of the body. The case of mixed neuroendocrine tumor with stones in the renal pelvis carries a poor prognosis and poses a therapeutic challenge to urologists.