This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
Ectopic rest of normal tissue is known as- 
Select and explain. 
A. Choristoma, B. Hamaoma, C. Pseudotumor, D. Lymphoma
A: Choristoma
Answer: A: Choristoma 
Explanation: Choristomas, forms of heterotopia, are closely related benign tumors, found in abnormal locations. The two can be differentiated as follows: a hamaoma is an excess of normal tissue in a normal situation (e.g. a bihmark on the skin), while a choristoma is an excess of tissue in an abnormal situation (e.g. pancreatic tissue in the duodenum).