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
This 12-year-old boy presented with abdominal pain. What is the diagnosis? 
Select and explain. 
A. Cowden syndrome, B. Cronkhite-Canada syndrome, C. Osler-Weber-Rendu syndrome, D. Peutz-Jeghers syndrome
D: Peutz-Jeghers syndrome
Answer: D: Peutz-Jeghers syndrome 
Explanation: 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.