text_1: 68-year-old white female presented with abdominal pain for over two months.  Eventually went to exploratory laparotomy where disseminated ovarian cancer was found.  Question:  What role, if any, would a CA-125 (cancer antigen 125) play in detecting this earlier?
text_2: Is the CA-125 (cancer antigen 125) indicated in unexplained abdominal pain?