A benign smooth muscle neoplasm arising from the liver. It is characterized by the presence of spindle cells with cigar-shaped nuclei, interlacing fascicles, and a whorled pattern. The disease is liver leiomyoma (MONDO_0004723, a Monarch Disease Ontology identifier). Also known as: hepatic leiomyoma, leiomyoma of liver, leiomyoma of the liver.