Lipo sarcoma definition as a malignant neoplasm of fatty origin. Clinical features cheek is the most common site. How can we remember this site? Now this mnemonic is very similar to the one of lipoma the same lipo circle mom is malignant tumor of fat so it is most likely to occur and a place that has a lot of fat and the place and the face that has the most fat is the cheeks. Okay, so life or sarcoma, malignant tumor outfought. We're looking for somewhere with a lot of fat, which is the cheeks