How is acute appendicitis diagnosed?

Written by Ren Zheng Xin
Gastroenterology
Updated on January 09, 2025
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The diagnosis of acute appendicitis is primarily based on clinical symptoms, signs, and auxiliary examinations. The patient describes abdominal pain accompanied by nausea and vomiting. During the physical examination, migratory pain in the lower right abdomen and significant rebound tenderness upon palpation are noted. Additionally, ultrasound diagnostics suggest swelling of the appendix lumen, all indicative of acute appendicitis. For acute appendicitis, once confirmed, surgery is generally required to remove the appendix, which is the only way to completely cure acute appendicitis.

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Written by Ren Zheng Xin
Gastroenterology
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What is acute appendicitis?

Acute appendicitis refers to the acute inflammation occurring in the lumen of the appendix, which is caused by the narrowing or blockage and subsequent infection of the lumen. The primary symptom is abdominal tenderness and rebound pain, accompanied by nausea, vomiting, and fever. During the acute phase, blood tests often show an elevated white blood cell count. The main treatment is surgical removal of the appendix, with laparoscopic appendectomy being the commonly used method. This is also a minimally invasive approach to appendicitis treatment. Postoperative care is important, and it is advised to fast on the day of the surgery. Once gas passes through the rectum, a liquid diet may be resumed.

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Written by Ren Zheng Xin
Gastroenterology
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How is acute appendicitis diagnosed?

The definitive diagnosis of acute appendicitis is primarily through clinical physical examination and auxiliary tests. Based on typical symptoms of acute appendicitis, such as migratory right lower abdominal pain, vomiting, nausea, fever, and a few patients may have symptoms of constipation or diarrhea. There is obvious tenderness and rebound pain when pressing on the abdomen. Additionally, an abdominal ultrasound can indicate swelling of the appendix lumen and a significant increase in appendix size. These aspects can lead to a preliminary diagnosis, and once acute appendicitis is confirmed, surgical treatment should be carried out.

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Written by Ren Zheng Xin
Gastroenterology
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Which is more serious, acute appendicitis or chronic appendicitis?

The symptoms of acute appendicitis are relatively more severe because acute suppurative appendicititis can cause perforation of the appendiceal lumen. After the perforation, pus can flow into the abdominal cavity causing diffuse peritonitis, leading to abdominal muscle tension, tenderness, and rebound pain. If not treated promptly, it can lead to multiple organ failure. Chronic appendicitis is mostly due to incomplete treatment of acute appendicitis, or chronic latent appendicitis. The symptoms of chronic appendicitis are sometimes mild and the physical signs are not definite. Surgical removal of the appendix should be the first choice for treating acute appendicitis.

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Written by Ren Zheng Xin
Gastroenterology
39sec home-news-image

How is acute appendicitis diagnosed?

The diagnosis of acute appendicitis is primarily based on clinical symptoms, signs, and auxiliary examinations. The patient describes abdominal pain accompanied by nausea and vomiting. During the physical examination, migratory pain in the lower right abdomen and significant rebound tenderness upon palpation are noted. Additionally, ultrasound diagnostics suggest swelling of the appendix lumen, all indicative of acute appendicitis. For acute appendicitis, once confirmed, surgery is generally required to remove the appendix, which is the only way to completely cure acute appendicitis.

doctor image
home-news-image
Written by Ren Zheng Xin
Gastroenterology
42sec home-news-image

The difference between acute appendicitis and chronic appendicitis

Acute appendicitis and chronic appendicitis are quite different. Acute appendicitis develops suddenly with clear symptoms of fever and vomiting, and the pain in the lower right abdomen is relatively severe. Chronic appendicitis, on the other hand, often develops as a result of prolonged acute appendicitis. The abdominal pain is not typically characteristic, generally with few instances of fever or vomiting, but it can include persistent abdominal pain. Chronic appendicitis can lead to the formation of an abscess around the appendix, and a lump can be felt in the lower right abdomen. Acute appendicitis generally requires prompt surgical treatment to prevent its transition into chronic appendicitis.