2022 Volume 31 Issue 4 Pages 254-258
Trochlear nerve schwannomas with communicating hydrocephalus are rare. Moreover, there have been no reports of spindle cells detected in cerebrospinal fluid cytology in schwannoma cases. A 37-year-old man was referred to our department with severe hydrocephalus, and a tumor at the basal cistern was detected on magnetic resonance imaging. The patient exhibited severe dysopia and anopsia on admission ; hence, emergency extraventricular drainage was performed. Several days later, a ventriculoperitoneal shunt was placed, and the tumor was surgically removed. Histopathology confirmed trochlear nerve schwannoma diagnosis. Furthermore, cerebrospinal fluid cytology revealed spindle cells. The association between schwannoma and communicating hydrocephalus is unclear. This study helps elucidate the mechanism underlying this association.
