1) Adenomyosarcoma 2) Embryoma of the kidney 3) Sarcoma 4) Wilms tumour 1) Adenomyosarcoma 
malignant renal (kidney) tumour of early childhood. In 75 percent of the cases, the tumour grows before the age of five; about two-thirds of the ... [1 related articles]
<oncology, tumour> Wilm's tumour or nephroblastoma, is a cancerous tumour of the kidney in children. Wilm's is the most common tumour of the kidney and the most common intra-abdominal tumour in children. The exact cause is unknown, but probably develops in foetal tissue due to an underlying genetic factor. ... (13 Nov 1997) ... 
(nef″ro-blas-to´mә) Wilms tumor.
Type: Term Pronunciation: nef′rō-blas-tō′mă Synonyms: Wilms tumor
Nephroblastoma: See: Wilms tumor.
a fast-growing cancer of the kidneys that occurs most commonly in children under 4 years of age