Nonprogrammable Shunts for Communicating Hydrocephalus and Three-Dimensional Volumetry: A Retrospective Analysis.

Objective: Although the use of different types of valves has been extensively studied in shunt surgery for communicating hydrocephalus (cHC), a consensus about the valve type remains absent. The objective of this study is to evaluate our results with the primary placement of nonprogrammable valves (NPVs) for this indication.

Methods: We retrospectively analyzed all first NPVs implanted between 2014 and 2020 for cHC.

Chiari Type I Malformation Presenting with Unilateral Hearing Loss.

Introduction:  Chiari type I malformations can present in different ways, but the most frequent symptom is an occipitocervical headache. Hearing loss as the main presenting symptom is rare.

Case:  A young woman with progressive left-sided unilateral hearing loss was diagnosed with a Chiari type I malformation.