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<p>This report presents the case of a benign metanephric stromal tumor that occurred in the kidney of a 5-year-old boy and in which differentiation from a nephroblastoma was successful. Radiological assessment played the decisive role in this case, as the low initial volume, a high apparent diffusion coefficient, and lack of rapid tumor growth were considered atypical for a nephroblastoma. The boy underwent successful kidney-preserving resection without neoadjuvant chemotherapy, and intraoperative contrast-enhanced ultrasound examination helped to accurately define the tumor margins. The case is reported to provide information on the radiological picture of pediatric metanephric stromal tumor.</p>

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Metanephric stromal tumor as a rare differential diagnosis of a renal mass in children – a case report

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月23日

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  • Ronja Riese,
  • Simon Veldhoen,
  • Corona Metz,
  • Carolin Scale

摘要

This report presents the case of a benign metanephric stromal tumor that occurred in the kidney of a 5-year-old boy and in which differentiation from a nephroblastoma was successful. Radiological assessment played the decisive role in this case, as the low initial volume, a high apparent diffusion coefficient, and lack of rapid tumor growth were considered atypical for a nephroblastoma. The boy underwent successful kidney-preserving resection without neoadjuvant chemotherapy, and intraoperative contrast-enhanced ultrasound examination helped to accurately define the tumor margins. The case is reported to provide information on the radiological picture of pediatric metanephric stromal tumor.