Most liver cysts have no clinical symptoms and are only detected incidentally during ultrasound or CT examinations. Liver cysts grow slowly and their clinical manifestations vary depending on the location, size, number, the presence or absence of compression of adjacent organs, and the presence or absence of complications. Some patients may have abdominal discomfort or pain due to the relatively superficial location of the cyst and friction with the diaphragm or peritoneum. In addition, the clinical manifestation has the following special cases: 1. Giant liver cyst When the diameter exceeds 10 cm, it can be called a giant liver cyst. Giant liver cysts tend to cause compression symptoms such as fullness after eating, nausea, vomiting, and hidden discomfort in the right upper abdomen. 2.Cyst secondary infection When secondary infection occurs, the patient may show pain in the liver area, fever, elevated white blood cells and other manifestations, and ultrasound or CT examination suggests the presence of pus. 3.Cyst secondary hemorrhage A few liver cysts can have spontaneous rupture of blood vessels in the cyst wall, leading to intracapsular hemorrhage. Some patients have no obvious symptoms, and some patients will have severe pain in the liver area, cool like acute abdomen. 4.Cyst torsion Cyst torsion can produce severe pain, but it is very rare. 5.Spontaneous rupture of cysts Liver cysts rarely rupture spontaneously, and even if they do, the fluid flowing out of the cysts is harmless to human body and usually no special treatment is needed. Most liver cysts are in a long-term “resting” state and will not grow, so there is no need to worry too much about them.