Stephen J. Schueler, M.D.

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Nephroblastoma Anatomy

To better understand Wilm's tumor, it helps to understand the anatomy of the kidneys.

The kidneys are located in the back of the abdomen, below the ribcage and on either side of the spine. Each kidney weighs about 1/4 pound (0.6 kg) and is about the size of a fist.

The kidneys filter waste from the bloodstream and produce urine. The kidneys also regulate the salt and water balance for the body.


  • Kidney
  • Kidney cross section
  • Kidney cross section close-up
  • Kidney collecting system
  • Genitourinary system

Last Updated: Jul 15, 2009 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed Nephroblastoma References
  1. Blakely ML, Shamberger RC, et al; National Wilms' Tumor Study Group. Outcome of children with cystic partially differentiated nephroblastoma treated with or without chemotherapy. J Pediatr Surg. 2003 Jun;38(6):897-900. [12778388]
  2. Kremens B, Gruhn B, Klingebiel T, et al. High-dose chemotherapy with autologous stem cell rescue in children with nephroblastoma. Bone Marrow Transplant. 2002 Dec;30(12):893-8. [12476282]
  3. McLorie GA. Wilms' tumor (nephroblastoma). Curr Opin Urol. 2001 Nov;11(6):567-70. [11734691]
  4. Pritchard-Jones K, Kelsey A, et al; United Kingdom Children's Cancer Study Group; Wilm's Tumor Working Group. Older age is an adverse prognostic factor in stage I, favorable histology Wilms' tumor treated with vincristine monochemotherapy: a study by the United Kingdom Children's Cancer Study Group, Wilm's Tumor Working Group. J Clin Oncol. 2003 Sep 1;21(17):3269-75. [12947062]
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