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[Chronic hydrocephaly in adults. A diagnostic and therapeutic challenge]
N Arriada-Mendicoa1, M P Herrera-Guerrero, E Otero-Siliceo
1Departamento de Neurocirugía, Instituto Nacional de Neurología y Neurocirugía, México DF, México. nicasioa@yahoo.com
Insights
Chronic hydrocephaly diagnosis and treatment are challenging. Careful analysis of clinical features, imaging, and cerebrospinal fluid (CSF) dynamics is essential for effective bypass treatment decisions.
Area of Science:
- Neurology
- Neurosurgery
- Medical Diagnostics
Context:
- Chronic hydrocephaly presents diverse clinical features.
- Normotensive hydrocephaly (HN) is a treatable dementia syndrome.
- Distinguishing between conditions like simple atrophy and HN is crucial.
Purpose:
- To delineate the clinical characteristics of various chronic hydrocephaly presentations.
- To emphasize diagnostic strategies and treatment modalities.
- To improve surgical outcome prediction in HN.
Summary:
- Advances in cerebrospinal fluid (CSF) dynamics investigations aid prognosis for bypass surgery.
- Paraclinical studies differentiate post-traumatic hydrocephaly from simple atrophy.
- Novel forms include external hydrocephaly and long-term ventriculomegaly with cognitive decline.
Impact:
- Accurate diagnosis and tailored treatment are vital for managing complex hydrocephaly cases.
- Improved understanding aids in selecting appropriate patients for surgical intervention.
- Distinguishing between different hydrocephaly subtypes optimizes patient care and outcomes.
Objective:
To describe the main clinical features of the different conditions which present as chronic hydrocephaly, emphasising the diagnosis and treatment.
Development:
In the study of any dementia syndrome, normotensive hydrocephaly (HN) is of particular interest since this condition may be treated and cured. However, prediction of which cases will benefit from surgery is one of the most important aspects of diagnosis. The development of paraclinical investigations of the dynamics of cerebrospinal fluid (CSF) has led to great advances in the management of these chronic forms of hydrocephaly, since they are the best parameters for prognosis when deciding whether to insert a by pass. The treatment of post traumatic hydrocephaly has also benefited from these studies, since the cases of simple atrophy may now be distinguished from those which follow a clinical course similar to HN. Recently, two types of hydrocephaly have been identified as being very different from the typical forms. These are external hydrocephaly, in which CSF accumulates in the convexity of the cerebral hemispheres, and long term ventriculomegaly, in which severe ventricular dilation is accompanied by cognitive alterations and features of acute hydrocephaly.
Conclusions:
Treatment of each of these conditions is a challenge. Therefore careful analysis of the clinical features, imaging studies and CSF dynamics is essential when deciding whether or not to use by pass treatment.