The colon showed no abnormality. Liver was normal. No lymph node or mesenteric involvement was seen. Most small bowel tumours are incidental findings at operation or autopsy. Smooth muscle tumours of the gastrointestinal tract can be classified as leiomyomas, leiomyosarcomas and high grade leiomyosarcomas, depending on the cytologic atypia and mitotic rate.
Leiomyoma is the commonest symptomatic benign lesion.
It is usually diagnosed in the fifth decade of life, although it may occur at any age. There is no sex predilection. Though mostly jejunoileal there has been a disproportionately high incidence of smooth muscle neoplasms in Meckel s diverticula, followed by the duodenum, if the unit area is considered. Grossly, leiomyomas are white-gray lesions. Microscopically, they contain well differentiated smooth muscle cells and no mitoses, which differentiates them from their malignant counterpart.