<prompt> Amongst the following, the most common site for Leiomyoma is -StomachSmall IntestineDuodenumColon  <response>: The most common benign neoplasm of the upper gastrointestinal tract is leiomyoma accounting for about 30 of all tumors.The commonest site of leiomyoma in the gastrointestinal tract is the stomach 61.5 followed by jejunum 19.Duodenal leiomyoma are rare and occur in 5 of cases. 