Blastemal-Predominant Primary Extrarenal Nephroblastoma Associated with Lumbosacral Lipomeningocele in an Infant: A Case Report and Focused Review.
Primary extrarenal nephroblastoma, or extrarenal Wilms tumor, is an exceptionally rare embryonal tumor outside the kidney. Spinal/lumbosacral involvement is particularly uncommon and may mimic congenital dysraphic lesions. We report a 10-month-old female infant followed since birth for presumed sacral lipoma and operat...