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Uterine sarcoma is a rare kind of cancer in which the cells in the muscles or other supporting tissues of the uterus become cancerous, and represents 1% of gynaecological cancers overall. This is very different to endometrial (uterus) cancer - see above.
There are two main histological sub-types; leiomyosarcoma, and stromal sarcoma. A known risk factor for developing uterine sarcoma is prior radiotherapy to the pelvic area, this is estimated to account for between 10% to 25% of cases.
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