This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gynaecological oncology, Subject name: Gynaecology & Obstetrics
A 55-year-old female presents with abdominal pain, distension, ascites and dyspnea. Her CA 125 levels are elevated. The most likely diagnosis is; 
Select and explain. 
A. Ca ovary, B. Ca cervix, C. Calimg, D. Symphoma
A: Ca ovary
Answer: A: Ca ovary 
Explanation: - the diagnosis is epithelial ovarian cancer. -the age of its peak incidence is between 50-60 years. - serum CA-125 is the tumor marker for epithelial ovarian cancer. CA-125 is more useful in the postmenopausal woman with adenexal mass. - the common symptoms are abdominal pain with distension, loss of weight and abnormal uterine bleeding. - ascites is a common sign. Reference : textbook of gynaecology Sheila balakrishnan, 2nd edition, pg no: 273,274,275. <\p>