Background
Longstanding overt ventriculomegaly in adults (LOVA) is a new form of progressive hydrocephalus characterized by onset in early childhood and gradual progression into adulthood. Patients with LOVA are usually asymptomatic in childhood. The diagnosis of LOVA in adolescence has not been reported.
Case report
A patient with macrocephaly and mild ventriculomegaly from infancy developed headache exacerbation and cognitive dysfunction at the age of 11 years. Brain magnetic resonance imaging showed mild tri-ventriculomegaly with no radiological aggravation compared to imaging at the age of 8 years. No papilledema was observed. Drainage of 15 ml of spinal fluid via a lumbar puncture relieved the headache and cognitive dysfunction. Based on repeated improvements in cognitive function and headaches after spinal fluid drainage, we diagnosed the patient with LOVA with symptom onset in early adolescence. A ventriculoperitoneal shunt was placed, and the headaches disappeared completely. The full-scale intellectual quotient, verbal comprehension, and working memory improved significantly.
Conclusions
LOVA may manifest as early as adolescence. The clinical presentation, age, clinical, radiological features, and management vary, and a spinal tap exam is useful for diagnosing LOVA, even in children. The spinal tap exam may be indicated in children with longstanding ventriculomegaly and neurological symptoms to diagnose this “treatable intellectual disability.”
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