A 4-year-old presents with a large, encapsulated renal mass consistent with Wilms tumor. The care team decides against a percutaneous biopsy before surgery. What is the primary rationale for avoiding biopsy in this context?

Question

TheoryPractice · Accepted Answer

Risk of tumor spillage. The correct answer is risk of tumor spillage. Rupture or spillage of a Wilms tumor (Stage III) significantly upstages the disease, requiring more aggressive chemotherapy and abdominal radiation. Therefore, in many protocols (especially North American), primary nephrectomy is preferred over biopsy for resectable masses. Distractor 1 is incorrect as tissue is usually abundant. Distractor 2 is not the primary surgical concern relative to staging. Distractor 3 is unrelated to the procedure's contraindication. Distractor 4 is incorrect as bleeding risk is manageable but spillage is the oncologic danger.

A 4-year-old presents with a large, encapsulated renal mass consistent with Wilms tumor. The care team decides against a percutaneous biopsy before surgery. What is the primary rationale for avoiding biopsy in this context?

Related questions

Free practice here. Timed mocks when you are ready.