<prompt> Which of the following is not useful as a screening method ?Pap smear for cervical cancerCA-125 for ovarian cancerOffice endometrial washing for endometrial cancerUSG in endometrial cancer  <response>: 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 