A child is admitted with a suspected diagnosis of Wilms' tumor. The nurse should place a sign with which of the following warnings over the child's bed?

A. No venipuncture or blood pressure in left arm: This precaution is typically used for clients with lymphedema (e.g., post-mastectomy) or an arteriovenous fistula for dialysis. It is not specific to Wilms' tumor. B. Collect all urine: Urine collection (often 24-hour) is used to test for vanillylmandelic acid (VMA) levels in Neuroblastoma, a tumor of the adrenal glands. It is not a standard precaution for Wilms' tumor. C. Contact precautions: Wilms' tumor is a malignancy (cancer), not an infectious disease. Standard precautions are sufficient. D. Do not palpate abdomen: Wilms' tumor (nephroblastoma) is an encapsulated tumor of the kidney found in children. The most critical safety precaution is to avoid palpating the abdomen. Palpation can cause the tumor capsule to rupture, which would spread (seed) cancer cells throughout the abdominal cavity and bloodstream. A sign is placed over the bed to warn all staff and family members.