Complex sentence: Eight years later, in 2000, she was again diagnosed with a rare and aggressive Leiomyosarcoma in the abdomen; quickly, the cancer traveled to her liver which, ultimately, caused her death in October, 2004.
Split into simpler sentences: Eight years later, in 2000, she was again diagnosed with a rare and aggressive leiomyosarcoma in the abdomen. The cancer soon traveled to her liver and ultimately caused her death in October, 2004.