We report the experience of the General Surgery Service of Segovia Gen
eral Hospital. In a 15-years-period (1976-1991), we have cared for 32
patients with muscular tumors of the gastrointestinal tract, including
22 leiomyomas and 11 leiomyosarcomas. These tumors were localized in
stomach (46.8%), small intestine (40.6%), esophagus (9.3%) and colon-r
ectum (3.1%). A histologic study was developed on the basis of the mit
osis number in 10 high power fields. Clinical manifestations, histolog
ical dates, treatment, and prognosis factors, outstanding the histolog
ical grade, size lesser than 10 cm, and tumor origin localization, are
reviewed.