This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
Most common cause of abdominal swelling in newborn 
Select and explain. 
A. Multicystic dysplastic kidney, B. Autosomal dominant PCKD, C. Autosomal recessive PCKD, D. Horseshoe Kidney
A: Multicystic dysplastic kidney
Answer: A: Multicystic dysplastic kidney 
Explanation: It is dysplastic , non functional kidney replaced by cysts.
It is usually U/L : B/L is not compatible with life.