1. Blood routine
White blood cell count is increased in patients with acute appendicitis. The white blood cell count is usually (10-15)×109/L. As the inflammation worsens, the white blood cell count increases, and may even exceed 20×109/L. However, in old and weak patients or patients with suppressed immune function, the white blood cell count does not necessarily increase. In conjunction with an increase in the white blood cell count, there is also an increase in the neutrophil count. The two are often present together, but there are also cases where only neutrophils are significantly increased and are of equal importance.
2. Urine routine
Occasionally, in cases of inflammation of the distal appendix and adhesion to the ureter or bladder, a small number of red and white blood cells may be present in the urine.
3. Ultrasonography
Can show retrobulbar appendicitis because the spastic appendix acts as a translucent window to the appendix. It is used to rule out chronic cholecystitis, chronic mesenteric lymphadenitis, chronic adnexitis in women, and chronic urinary tract infections, which are most easily confused with chronic appendicitis.
4. Laparoscopy
This test is one of the most certain diagnostic methods for acute appendicitis. Because laparoscopy can be inserted through the lower abdomen to directly observe the appendix for inflammation, it can also distinguish other neighboring diseases with similar symptoms to appendicitis, and can be treated at the same time.
5. X-ray barium enema
Barium enema not only clarifies whether the pressure point is located in the appendix, but also excludes other diseases that can be confused with chronic appendicitis, such as ulcerative disease, chronic colitis, cecum tuberculosis or cancer.