This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
[{'content': 'This 12-year-old boy presented with abdominal pain. What is the diagnosis? \nSelect and explain. \nA. Cowden syndrome, B. Cronkhite-Canada syndrome, C. Osler-Weber-Rendu syndrome, D. Peutz-Jeghers syndrome', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Answer D. Peutz-Jeghers syndromeThe presence of mucocutaneous pigmented lip lesions suggests the diagnosis of Peutz-Jeghers syndrome, an autosomal dominant disorder characterized by development of multiple hamartomatous gastrointestinal polyps.', 'role': 'assistant'}]