Appendix Leiomyoma

**Semantic type:** Neoplastic Process

**Definition:** 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.

**Synonyms:** - Appendiceal Leiomyoma - Leiomyoma of Appendix - Leiomyoma of the Appendix