Pediatric Extra-Renal Nephroblastoma (Wilms' Tumor): A Systematic Case-Based Review

Area of Science:

• Pediatric Oncology
• Surgical Pathology
• Rare Cancers

Background:

• Wilms Tumor (WT) is a common pediatric kidney cancer.
• Extra-Renal Wilms Tumor (ERWT) is a rare variant, typically found in the abdomen or pelvis.
• Spinal ERWT is exceptionally rare, with limited clinical data.

Purpose of the Study:

• To report a case of spinal ERWT in a pediatric patient.
• To conduct a systematic literature review on pediatric ERWT diagnosis, treatment, and outcomes.
• To identify needs for improved management and research for ERWT.

Main Methods:

• Case report of a 4-year-old boy with spinal ERWT.
• Systematic literature review of 72 papers on pediatric ERWT.
• Analysis of diagnostic, therapeutic, and outcome data for 98 pediatric ERWT patients.

Main Results:

• A multimodal approach (chemotherapy, radiotherapy, surgery) was common but lacked standardization.
• Prompt diagnosis, complete resection, and tailored multimodal treatment are crucial for better outcomes.
• Significant heterogeneity exists in current ERWT management strategies.

Conclusions:

• There is a need for a standardized staging system for pediatric ERWT.
• International collaboration and research are essential for developing effective clinical trials.
• Improved diagnostic and therapeutic strategies could enhance treatment success rates for this rare pediatric malignancy.