Leiomyosarcoma

Cancer originating in smooth muscle

A leiomyosarcoma (LMS) is a rare malignant (cancerous) smooth muscle tumor. The word is from leio- 'smooth' myo- 'muscle' and sarcoma 'tumor of connective tissue'. The stomach, bladder, uterus, blood vessels, and intestines are examples of hollow organs made up of smooth muscles where LMS can be located; however, the uterus and abdomen are the most common sites.

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