This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Pathology
[{'content': 'Ectopic rest of tissue is known as \nSelect and explain. \nA. Choristoma, B. Hamaoma, C. Pseudo tumour, D. Lymphoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: *Choristoma (Heterotopia) - Microscopically normal cells or tissues that present in abnormal locations.*Hamaoma - Excessive, focal overgrowth of cells or tissues native to the organ in which it occurs.Ref: Robbins 8/e p473', 'role': 'assistant'}]