Does ultrasound tests for ovarian cysts?

An U/S of anything: Shows size, shape, and consistency of the tissue, or inconsistencies that are fluid filled (cysts) or solid filled or at least not filled with water density...This can be menstrual cycle dependent as well, and ovaries are on both sides, with the tubes are called adnexa. Fluid in the abdomen acan also be seen. None of this provides a diagnosis: need cells or tissue.