Can you trust the diagnosis of ovarian cancer that is detected through a ct scan and ultrsound?

Not very reliable: Ultrasound, ct, tumor marker evaluation, history, and physical exam have not been shown to be effective in adequately screening for this disease (even when used all together). This is a disease we don't really have a handle on right now. This doesn't mean patients who have pelvic pain or risk factors shouldn't be evaluated, but the tools available have not been shown to increase life expectancy.