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4282 Pathology

Which one of the listed individuals is most likely to have a tumor that has a histologic appearance characterized by undifferentiated mesenchymal cells with immature tubules and aboive glomerular formation?

AA 2-week-old infant with a midepigastric mass, projectile vomiting, and normal urinary hydroxy-indoleacetic acid (HIAA)
BAn 8-month-old infant with an abdominal mass and normal urinary vanillylmandelic acid (VMA) (Correct Answer)
CA 14-month-old infant with an abdominal mass and increased urinary VMA
DA 39-year-old female with abdominal cramps, watery diarrhea, periodic facial flushing, wheezing, and increased urinary HIAA