A 12-year-old girl who has not yet reached menarche comes to the pediatrician’s office for her annual well-child check. As the nurse is weighing and measuring her, the child says emphatically that she does not want to get her period. Which response would be most appropriate for the nurse to make to this child?

Choice A reason: Frequent bladder urges relate to bladder size and neurological maturation, not kidney location. Children’s higher kidney position increases trauma risk, making this unrelated and incorrect for the anatomical difference in kidney placement between children and adults in the context of injury risk.

Choice B reason: Children’s kidneys are proportionally larger and higher (near T12-L3) with less protective fat, increasing trauma risk from blunt injury. This anatomical difference aligns with pediatric urology evidence, making it the correct fact related to kidney location in children compared to adults.

Choice C reason: Fluid retention is a physiological process, not directly tied to kidney location. Children’s higher kidney placement increases trauma susceptibility, making this irrelevant and incorrect for the anatomical comparison of kidney position between children and adults in terms of health risks.

Choice D reason: Adults may have less fat, but children’s kidneys are less protected due to higher positioning and thinner fat layers. Trauma risk is the primary concern, making this partially correct but incorrect compared to the direct consequence of kidney trauma in children due to location.

Choice A reason: Perianal itching is the hallmark symptom of enterobiasis, caused by pinworms laying eggs at night, irritating the skin. This aligns with pediatric infectious disease evidence, making it the most likely history in a child admitted with pinworm infection, accurately reflecting the condition’s presentation.

Choice B reason: Malnutrition is not typically associated with pinworms, which cause localized irritation rather than systemic nutrient loss. Perianal itching is the primary symptom, making this incorrect, as it does not reflect the usual clinical history of a child with enterobiasis in a hospital setting.

Choice C reason: Bedwetting is unrelated to pinworm infection, which primarily causes perianal itching due to nocturnal egg-laying. Itching is the expected history, making this incorrect, as bedwetting does not correlate with the typical presentation of enterobiasis in a young admitted child.

Choice D reason: Restlessness may occur due to itching but is less specific than perianal itching, the defining symptom of pinworms. Itching directly ties to the diagnosis, making this less precise and incorrect compared to the primary history expected in a child with enterobiasis infection.