Ectopic rest of normal tissue is known as-: (A) Choristoma, (B) Hamaoma, (C) Pseudotumor, (D) Lymphoma
Answer is A. 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).