One of the reasons for shunt infection is valve erosion through the skin. In such cases, it is common practice to instantly relocate the shunt to avoid infection. We present a 77-year-old female patient with a 15-month history of hydrocephalus valve extrusion. Despite her poor mental status, clinical condition and hygiene, and the prolonged extrusion period, she developed neither a local nor a cerebrospinal fluid (CSF) infection. The patient was ultimately treated with shunt removal and repositioning. An extensive literature review revealed no previous report of such a case. This case indicates that under rare conditions, central nervous system (CNS) implantable devices might not become contaminated and may remain functional, even if they remain exposed for prolonged periods.