smooth muscle tumour
{{short description|Tumor originating in smooth muscle}}
Smooth muscle tumours show a smooth muscle differentiation. There are two main types of smooth muscle tumour: the benign leiomyoma and the malignant leiomyosarcoma.{{cite book |title=Rosai and Ackerman's Surgical Pathology |date=2018 |publisher=Elsevier |pages=502–527 |edition=11}}