Intracranial Hypertension in Cystinosis Is a Challenge: Experience in a Children’s Hospital

Abstract

Background: Cystinosis is a rare systemic lysosomal disease affecting mainly the kidney and eye. Ocular involvement in cystinosis is universal being the presence of cystine crystals in the cornea a diagnostic criterion and one of the earliest manifestations of the disease. Neuro-ophthalmologic manifestations are considered a rare and late complication in these patients. The aim of this article is to report the unexpectedly high incidence of intracranial hypertension in children with cystinosis at our centre.

Methods: This study included eight children (0–16 years of age) with cystinosis seen at the paediatric ophthalmology department, Hospital Universitari Vall d’Hebron (Barcelona, Spain), a tertiary hospital, over the last 5 years.

Results: Three girls and five boys, mean age: 9.6 years (range: 5–14 years), were studied. During follow-up, 4 out of 8 developed papilledema and confirmed high cerebrospinal fluid (CSF) pressure. The only symptomatic child presented an Arnold–Chiari anomaly with enlarged ventricles, whereas the other three, all asymptomatic, were diagnosed by scheduled fundoscopy and had normal neuroimaging studies. All four patients had at least one known risk factor for developing intracranial hypertension: initiation of growth hormone therapy, tapering of corticosteroids, acute renal failure and Arnold–Chiari malformation. Two of them required a ventriculoperitoneal shunt.

Conclusions: Our results show that intracranial hypertension can occur more frequently than expected in patients with cystinosis. Furthermore, visual prognosis depends on early diagnosis and prompt treatment. A multidisciplinary approach is necessary, and we recommend fundoscopic examinations in all paediatric patients with cystinosis whether or not they present symptoms.

My co-authors have all contributed to this manuscript: planning, conducting and reporting of the work described in the article, and approval of this submission.

Appendices

Take-Home Message

Intracranial hypertension is an unexpected complication in patients with cystinosis and regular fundoscopic examinations are recommended to rule out papilledema.

Compliance with Ethics Guidelines

Conflict of Interest

Nieves Martín-Begué, Silvia Alarcón, Charlotte Wolley-Dod, Luis Enrique Lara, Álvaro Madrid, Paola Cano, Mireia del Toro and Gema Ariceta declare that we have no conflict of interest.

Informed Consent

All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2000 (5). Informed consent was obtained from all patients for being included in this study. Additional informed consent was obtained from all patients (or from their parents) for which identifying information is included in this article.