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
Ectopic rest of tissue is known as 
Select and explain. 
A. Choristoma, B. Hamaoma, C. Pseudo tumour, D. Lymphoma
A: Choristoma
Answer: A: Choristoma 
Explanation: *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