Simple liver cysts are fluid-filled cavities in the liver. Usually, they cause no symptoms and need no treatment. However, they may become large enough to cause pain or discomfort in the upper right part of the abdomen.
Most liver cysts can be seen on ultrasound or CT scans. When needed, treatment may include drainage or removal of the cyst.
The cause of simple liver cysts isn't known. They may be the result of a malformation present at birth. Rarely, liver cysts may mean a serious, underlying condition such as:
- Polycystic liver disease, a disorder that runs in families.
- Echinococcus infection, a parasitic infection.
- Liver cancer.
Show References
- Yeo CJ, ed. Hepatic cysts. In: Shackelford's Surgery of the Alimentary Tract. 8th ed. Elsevier; 2019. https://www.clinicalkey.com. Accessed Jan. 20, 2022.
- Regev A, et al. Diagnosis and management of cystic lesions of the liver. https://www.uptodate.com/contents/search. Accessed Jan. 20, 2022.
- Feldman M, et al., eds. Hepatic tumors and cysts. In: Sleisenger and Fordtran's Gastrointestinal and Liver Disease: Pathophysiology, Diagnosis, Management. 11th ed. Elsevier; 2021. https://www.clinicalkey.com. Accessed Jan. 20, 2022.
Original article: https://www.mayoclinic.org/diseases-conditions/liver-problems/expert-answers/liver-cysts/faq-20058440