Kaposi’s sarcoma is a rare type of cancer that affects the skin, mouth and occasionally the internal organs.
Leiomyosarcoma develops in the smooth muscle cells, which are sometimes called involuntary muscles because they cause organs to contract without our control.
Liposarcoma develops from the fat cells found all over the body. It can occur anywhere throughout the body but most commonly on the trunk, limbs and in the retroperitoneum.
MPNSTs, also known as neurofibrosarcomas, develop in the cells that cover nerves. They can occur anywhere throughout the body. MPNSTs occur mainly in adults.