Odd Hemoventricle Pattern Masking Bilateral Trigone Xantogranulomas

Abstract

Reactivity of the choroid plexuses in neurovascular or traumatic pathologies has long been studied. Presence of intraventricular hematoma during basal ganglia hemorrhagy is a negative prognostic factor since correlates with increased risk of hydrocephalus. The dynamic evolution of an intraventricular hematoma may be influenced by the secretory activity of the plexuses but also the very presence of intraventricular tumors could modify the morphology of the hematoma. Pathologies such as Xanthogranulomas of the choroid plexuses are benign malformations, as they are asymptomatic they are generally found as incidentalomas. Having a density similar to that of the choroid plexuses they may not be easily observed. Brain CT study in 73-year-old male patient showed left basal ganglia hemorrhage with hemoventricle occupying a large part of the trigone with a honeycomb-like radiological pattern. This pattern was characterized by the presence of hemorrhagic hyperdensity with irregular hypodense lobulated alveoli inside separeted by isodense septa. The above morphological pattern persisted and was unveiled even controlaterally in subsequent CT follow-ups.