There are many ways to check for pelvic effusion. 1. ultrasound examination can be performed, which is a better method. When the amount of fluid is small, the echogenic zone is relatively small, but when there is more fluid, a wider echogenic zone can be seen around the uterus or in the intestinal space, so it can represent the presence of fluid. 2. The results of this study are summarized below. If you are suffering from pelvic effusion, it is best to have timely treatment.