PT - JOURNAL ARTICLE AU - Chen, Yi-An AU - Hsieh, Cheng-Ta AU - Sun, Jui-Ming TI - Extrahepatic pseudocyst in an adult AID - 10.17712/nsj.2021.1.20200117 DP - 2021 Jan 01 TA - Neurosciences Journal PG - 97--102 VI - 26 IP - 1 4099 - http://nsj.org.sa/content/26/1/97.short 4100 - http://nsj.org.sa/content/26/1/97.full SO - Neurosciences (Riyadh)2021 Jan 01; 26 AB - Ventriculoperitoneal (VP) shunts are commonly used in neurosurgical procedures to treat hydrocephalus. Although shunt-associated abdominal complications are well documented, extrahepatic pseudocysts are a rare shunt complication in adult patients. Therefore, we herein report the case of a 54-year-old male patient who presented with a bulging mass around the previous surgical site at the right upper quadrant of the abdomen. He had a 4-year history of VP shunt surgery for posthemorrhagic hydrocephalus. A computed tomographic scan revealed a large extrahepatic pseudocsyt. Our case represented a rare entity of extrahepatic pseudocyst in adult patients underwent VP shunt surgery. The clinical presentation, diagnostic tools, and treatment methods were discussed.