A young child has been diagnosed with Wilms tumor after his mother discovered an unusual mass, prompting a diagnostic workup. Which of the following characteristics is typical of Wilms tumor? The tumor is usually:
A) Asymptomatic
B) Self-limiting
C) A secondary neoplasm
D) Encapsulated
Ans: D
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Wilms tumor usually is a solitary mass that occurs in any part of the kidney. It usually is sharply demarcated and variably encapsulated. It is not a self-limiting health problem, and chemotherapy, radiotherapy, and/or surgery may be utilized. Symptoms include hypertension, abdominal pain, and vomiting.
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