Wilms tumor in Child
Alerts and Notices
Synopsis

Children most commonly present with an asymptomatic abdominal mass. Prior to diagnosis, 1 in 4 patients may develop a complication from tumor invasion of the kidney such as hematuria, abdominal pain, or hypertension. A small group can present more acutely in the setting of subcapsular hemorrhage with pain, rapidly enlarging abdominal mass, anemia, hypertension, and, in some cases, fever.
The majority of Wilms tumors are isolated lesions, with only 1 in 10 patients with multiple lesions in a single kidney and between 5%-7% with bilateral kidney involvement.
Wilms tumor has rarely been reported in adults. This summary focuses on children.
Codes
ICD10CM:C64.9 – Malignant neoplasm of unspecified kidney, except renal pelvis
SNOMEDCT:
302849000 – Nephroblastoma
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Diagnostic Pearls
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Differential Diagnosis & Pitfalls
For a toddler with an asymptomatic abdominal mass: Other renal tumors of children include:- Rhabdoid tumor of kidney
- Clear cell sarcoma of kidney
- Renal cell carcinoma
- Renal medullary carcinoma
- Congenital mesoblastic nephroma
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Last Reviewed:07/07/2019
Last Updated:07/08/2019
Last Updated:07/08/2019