CT Pelvis in Children; Should We Routinely Scan Pelvis for Wilms Tumor and Hepatoblastoma? Implications for Imaging

Waseem Mirza1, Kieran McHugh2, Mubashir Aslam3

  • 1Department of Radiology, The Aga Khan University Hospital, Karachi.

Insights

Wilms tumor presents with higher metastatic rates than hepatoblastoma in children. Further research is needed to understand these differences in pediatric abdominal tumors.

Area of Science:

  • Pediatric Oncology
  • Medical Imaging

Background:

  • Wilms tumor and hepatoblastoma are common pediatric intra-abdominal solid organ tumors.
  • CT scans are routinely used for diagnosis despite radiation concerns.

Purpose of the Study:

  • To compare metastatic disease patterns between Wilms tumor and hepatoblastoma in children.
  • To evaluate pelvic extension and metastasis in both tumor types.

Main Methods:

  • Retrospective evaluation of 60 pediatric patients (45 Wilms tumor, 16 hepatoblastoma).
  • Analysis of CT findings for metastatic disease at presentation and during follow-up.

Main Results:

  • Wilms tumor showed a significantly higher rate of metastatic disease at presentation (44.4%) compared to hepatoblastoma (6.3%).
  • Metastatic disease during follow-up was also more frequent in Wilms tumor (6 patients) than hepatoblastoma (2 patients).
  • No significant difference in pelvic extension at presentation or follow-up was observed between the two tumor types.

Conclusions:

  • Wilms tumor demonstrates a higher propensity for metastatic spread compared to hepatoblastoma.
  • CT findings highlight distinct metastatic behaviors, informing management strategies for pediatric abdominal tumors.

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