nephroblastoma

World English Dictionary
nephroblastoma (ˌnɛfrəʊblæsˈtəʊmə)
 
n , pl -mata, -mas
a malignant tumour arising from the embryonic kidney that occurs in young children, esp in the age range 3--8 years

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

nephroblastoma neph·ro·blas·to·ma (něf'rō-blā-stō'mə)
n.
See Wilms tumor.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Britannica
Encyclopedia

nephroblastoma

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 instances are apparent by two years of age. The tumour grows rapidly and can approach the weight of the rest of the body. It rarely appears in adults. In its early stages the nephroblastoma causes no symptoms. Later, symptoms may indicate fever, distortion of the kidney mass, evidence of secondary tumours elsewhere in the body, abdominal and flank pain, weight loss, nausea, loss of appetite, and vomiting.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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