[A well-circumscribed benign smooth muscle neoplasm arising from the appendix. It is characterized by the presence of spindle cells with cigar-shaped nuclei, interlacing fascicles, and a whorled pattern. ( NCI )]
UMLS (NCI) C1332327Appendix Leiomyoma
Leiomyoma of Appendix
Leiomyoma of the Appendix