Which of the following is not useful as a screening method ?

Ans. is 'b' i.e., CA-125 for ovarian cancer o Endometrial cancer screening : i) Pap smear (Not much useful; only recommended for cervical cancer) ii) Ultrasonography iii) Office endometrial washings iv) Colour flow imaging o Ca-125 in not useful in screening ovarian cancers because : i) CAl25 increases only in late stages of cancer ii) CAl25 gives a lot of false positive results iii) CAl25 with USG is a good screening test