small intestine leiomyoma (MONDO_0002092) is a benign smooth muscle neoplasm arising from the small intestine. It is characterized by the presence of spindle cells with cigar-shaped nuclei, interlacing fascicles, and a whorled pattern. Also known as: leiomyoma of small bowel, leiomyoma of small intestine, leiomyoma of the small bowel, leiomyoma of the small intestine, leiomyoma, small bowel, leiomyoma, small intestine, small bowel leiomyoma, small intestinal leiomyoma.