Normal tissue in an ABNORMAL location is the definition of which lesion?

A Choristoma is defined as normal tissue found in an abnormal location (ectopic normal tissue). A classic oral example is gastric mucosa in the floor of the mouth, or salivary gland tissue in a lymph node. A Hamartoma is disorganized but tissue-appropriate tissue — normal cells in an abnormal arrangement at the correct site. Key mnemonic: Choristoma = tissue Chooses the Wrong location.