Smooth-Muscle Tumors of the Colon

Abstract
IN 1863 Virchow reported a case of gastric smooth-muscle tumor. In 1923 Scott1 operated on the first patient in the United States. The pathological diagnosis was leiomyoma malignum. Baker and Good2 defined these tumors as smooth-muscle tumors of the alimentary tract and include both benign leiomyoma and malignant leiomyosarcoma. Incidence These large-bowel tumors comprise about 1% of all gastrointestinal tumors. The incidence of tumors of the colon in various authors' reports were as follows: MacKenzie et al,3 nine of 269; Ripstein and Flint,4 one half of 1% of 202; Golden and Stout,5 eight of 60. A 4-week-old infant was the youngest patient having involvement of the colon in a case reported by Kriss.6 The oldest patient was 81 years of age. Meszaros7 saw six out of 13 patients below 27 years of age. Bockus8 reported 37 large-bowel, smooth-muscle tumors, 24 of which were

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