A 2-year-old male child presents with a lump in the right side of the abdomen. Ultrasound revealed it to be a solid mass. On examination, his right arm and leg were found to be longer. The most likely diagnosis is:: (A) Wilms' tumor, (B) Neuroblastoma, (C) Angiomyolipoma, (D) Nephroblastoma
Answer is A. The finding of right arm and leg to be longer suggests hemihyperophy. This is a feature of Beckwith Wiedemann syndrome associated with Wilms tumor.