This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T., Subject name: Medicine
A previously healthy 5-year-old boy presented with a 4-day history of nausea, vomiting, and intermittent abdominal pain. On examination he had mild periorbital edema. A computed tomography scan with contrast demonstrated these findings. What is the diagnosis? 
Select and explain. 
A. Hyperplastic polyps, B. Reflux gastropathy, C. Zollinger-Ellison syndrome, D. Menetrier's disease
D: Menetrier's disease
Answer: D: Menetrier's disease 
Explanation: Answer D. Menetrier's disease The correct answer is Menetrier's disease. This is a rare form of acquired protein-losing enteropathy characterized by giant gastric rugal folds and epithelial hyperplasia and is associated with hypoalbuminemia and edema. This is a pediatric form, which symptomatically resembles the adult-onset type, but can have a benign, self-limited course with spontaneous resolution.