Botryoid Wilms-tumor: report of two cases

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• 作者：Bei-Wu Tu (1)
  Wei-Jing Ye (2)
  Yu-Hua Li (1)
  
• 关键词：botryoid Wilms-tumor ; computed tomography ; enhancement
• 刊名：World Journal of Pediatrics
• 出版年：2011
• 出版时间：August 2011
• 年：2011
• 卷：7
• 期：3
• 页码：274-276
• 全文大小：332KB
• 参考文献：1. Inoue M, Uchida K, Kohei O, Nashida Y, Komada Y, Kusunoki M. Teratoid Wilms-tumor: a case report with literature review. J Pediatr Surg 2006;41:1759-763. CrossRef
  2. Yanai T, Okazaki T, Yamataka A, Kobayashi H, Lane GJ, Saito M, et al. Botryoid Wilms-tumor: a report of two cases. Pediatr Surg Int 2005;21:43-6. CrossRef
  3. Nagahara A, Kawagoe M, Matsumoto F, Tohda A, Shimada K, Yasui M, et al. Botryoid Wilms-tumor of the renal pelvis extending into the bladder. Urology 2006;67:845.e15-7. CrossRef
  4. Honda A, Shima M, Onoe S, Hanada M, Nagai T, Nakajima S, et al. Botryoid Wilms-tumor: case report and review of literature. Pediatr Nephrol 2000;14:59-1. CrossRef
  5. Mitchell CS, Yeo TA. Noninvasive botryoid extension of Wilms-tumor into the bladder. Pediatr Radiol 1997;27:818-20. CrossRef
  6. Johnson KM, Horvath LJ, Gaisie G, Mesrobian HG, Koepke JF, Askin FB. Wilms tumor occurring as a botryoid renal pelvicalyceal mass. Radiology 1987;163:385-86.
  7. Weinberg AG, Currarino G, Hurt GE Jr. Botryoid Wilms-tumor of the renal pelvis. Arch Pathol Lab Med 1984;108:147-48.
  8. Chiba T, Ohashi E. Wilms tumor extending into the dilated renal pelvis as a mold. J Urol 1980;124:130-31.
  
• 作者单位：Bei-Wu Tu (1)
  Wei-Jing Ye (2)
  Yu-Hua Li (1)
  
  1. Department of Radiology, Xinhua Hospital, Medical College of Jiaotong University, Shanghai, 200092, China
  2. Department of Urological Surgery, Renji Hospital, Medical College of Jiaotong University, Shanghai, 200001, China
  

文摘

Background Botryoid Wilms-tumor is a rare kind of Wilms-tumor. We report two cases of this tumor. Methods Case 1, a 2-year-old boy, was admitted with macrohematuria for 5 months. Case 2, a 19-month-old boy, was referred for a palpable abdominal mass. The two cases were checked by 64-row multi-slice spiral CT (MSCT) and scanned with the dynamic contrast enhancement. The masses were excised and pathologically confirmed. Results In case 1, the mass occurred in the renal pelvis and calyx bilaterally, with heterogeneous density and prominent calcification. By contrast enhanced CT scan, the mass was mildly enhanced. In case 2, the left renal pelvis and ureter were filled with the tumor. Unenhanced scan revealed that the mass was homogeneous and non-calcified. In contrast, the mass was slightly and heterogeneously enhanced. Macroscopically, the mass filled in the pelvicalyceal system and had a botryoid appearance. Microscopically, the typical features of Wilms-tumor with blastemal, epithelial, and stromal components were evident. Conclusion Botryoid Wilms-tumor should be included in the differential diagnosis of tumors in the pelvicalyceal system no matter it is unilateral or bilateral.