How many millimeters of fluid dark area in the right kidney is considered serious?

Generally, a 30mm fluid dark area in the right kidney is considered serious. The detailed analysis is as follows:

A fluid dark area in the right kidney appears during an ultrasound examination when sound waves have difficulty passing through regions where fluid has accumulated. This shows up clearly on the monitor and may represent various bodily fluids such as exudate, pus, amniotic fluid, or blood. Normally, a fluid dark area in the right kidney does not exceed 10mm. If it exceeds 10mm, it may be caused by mild hydronephrosis or related to factors such as urine retention. If routine urinalysis reveals no abnormalities and there are no obvious symptoms, special treatment is usually unnecessary. However, when the fluid dark area reaches 30mm in the right kidney, this indicates a more serious condition, often due to pathological fluid accumulation, such as ureteral stones, benign prostatic hyperplasia, or bladder tumors.

In summary, if a fluid dark area of 30mm is detected in the right kidney, prompt evaluation at a reputable medical facility is necessary. Treatment should target the underlying cause and may include medication or surgical intervention. In daily life, maintaining personal hygiene, changing clothes regularly, and preventing bacterial infections are important.