How many millimeters of pelvic fluid accumulation is considered within the normal range?

The normal range of pelvic fluid can vary depending on different physiological states and individual differences. Below is a detailed explanation of the normal range for pelvic fluid: Normal pelvic fluid volume in women: Under normal circumstances, the volume of pelvic fluid in healthy women ranges from 3.4 to 6.5 ml. When converted into millimeters, this corresponds to approximately 10–20 mm or less than 20 mm (i.e., 2 cm). It is common for women to have a small amount of pelvic fluid during ovulation or early pregnancy, which is considered a normal physiological phenomenon. This type of fluid accumulation typically causes no discomfort; a few women may experience mild lower abdominal fullness, but treatment is usually unnecessary as the fluid resolves spontaneously. If the volume of pelvic fluid exceeds the normal range, it may be caused by pathological conditions such as pelvic inflammatory disease, ectopic pregnancy, or corpus luteum rupture. In such cases, the fluid collection may exceed 20 mm (or 2 cm) and may be accompanied by symptoms such as abdominal pain, purulent vaginal discharge, low back pain, or soreness.