You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is The commonest benign intramural tumor of the esophagus is - and explain in detail?
Leiomyoma is the most common benign neoplasma of esophagus and accounts for two-third of all the benign neoplasms.
They usually arise as intramural growth, most commonly along the distal two-third of the esophagus.