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: Pathology
[{'content': 'What are hamartomas - \nSelect and explain. \nA. Hemangiomas, B. Development malformations, C. Hematomas, D. Antibioma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Hamartoma \n\nA hamartoma is a benign (noncancerous) tumor-like growth consisting of a disorganized mixture of cells and tissues normally found in the area of the body where the growth occurs.\nFor example, hamartoma of lung contains cartilage, blood vessels, bronchial type of structures and lymphoid tissues.\n\nIt is a\xa0development malformation that resembles a neoplasm in the tissue of\xa0origin.\n\n\nBut, it is not a neoplasm because it grows at the same rate as the surrounding tissues, unlike neoplasm whose growth exceeds the growth of the surrounding tissue.\n\n\nChoristoma\n\nChoristoma is the ectopic rest of normal tissue, i.e., the normal tissue is present at a different anatomical site of the body.\nFor example, the presence of pancreatic tissue in mucosa of the small intestine\n\nNormally arranged tissue at a different anatomical site (ectopic site) → Choristoma.\n\n\nAbnormally arranged tissue present at normal site → Hamartoma', 'role': 'assistant'}]