CASE REPORT article

Front. Pediatr.

Sec. Pediatric Urology

Volume 13 - 2025 | doi: 10.3389/fped.2025.1550425

A rare case of mixed epithelial and stromal tumor of the kidney in an adolescent: imaging findings and literature review

Provisionally accepted
Guang  FuGuang FuRong  XiaoRong XiaoXudan  YangXudan YangTao  LuTao Lu*
  • Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, China

The final, formatted version of the article will be published soon.

Mixed epithelial and stromal tumor of the kidney (MESTK) is an unusual biphasic benign renal neoplasm. It predominantly occurs in perimenopausal women, with only eight cases reported in children. Owing to its rarity, only limited radiological information has been reported in the literature, in none of the previous pediatric cases were both CT and MRI findings of the tumor provided. Herein, we report a rare case of MESTK in a 13-year-old girl. This case was the largest observed in children to date. Findings from our report provide novel insights into the MRI features of a large pediatric MESTK and indicate the importance of MRI for observing adipose components and the absence of diffusion restriction within the tumor. Radiologists should consider the possibility of MESTK in children when they observe a large, solid renal tumor without diffusion restriction in children.

Keywords: Mixed epithelial and stromal tumor of the kidney, Kidney, Adolescent, Magnetic Resonance Imaging, computed tomography

Received: 23 Dec 2024; Accepted: 21 Apr 2025.

Copyright: © 2025 Fu, Xiao, Yang and Lu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Tao Lu, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, China

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