iarjsIARJSIARJS2789-6102https://doi.org/10.47310/iarjs.2023.v03i01.009Case Report: Loculated HydrocephalusAndhikaAjiNugrohoGeizarArsikaRamadhanaHydrocephalus is a condition characterized by an excess of Cerebrospinal Fluid (CSF) in the ventricles of the brain. Whereas, loculated hydrocephalus is when a compartment is filled with a discrete fluid formed in or in conjunction with the system of the ventricles of the brain. We present a case of a five-month-old baby boy with loculated hydrocephalus. The patient's diagnosis was loculated hydrocephalus with an endoscopic fenestration plan. CT scan of the head shows enlargement of the ventricles. Currently, the treatment option for loculated hydrocephalus is phenestration microsurgery of the septate compartment with open or endoscopic craniotomy. It is the appropriate therapeutic option used in this condition in order to allow drainage through the single shunt catheter system in the CSF compartment.