Dear Editor,

We read with great interest the recent article by Consales et al. concerning the treatment and outcome of children with cerebral cavernomas. The authors prospectively studied 32 children with brain cavernomas. A great proportion of cavernomas (65.6%) had macrohemorrhage, whereas 15.6% presented only with seizures. Surgical excision was performed in 28 patients and resulted in favorable long-term outcome and seizure control. The authors concluded that there is a high risk of macrohemorrhage in children with cavernomas and surgery should be performed in most surgically accessible cavernomas [1].

We retrospectively studied only the cerebral cavernomas that were treated surgically in our institute over the last 14 years. We identified 16 cases of pediatric cavernomas. The parietal lobe was the most common site of occurrence, whereas only two cavernomas were infratentorial. In our series, there were only 3 children with macrohemorrhage, whereas 14 children presented with seizures. Among them, 8 children had seizures that were controlled by medication, 2 cases were refractory to anticonvulsants and the remaining 4 patients were operated shortly after the first few seizures. In all cases, gross total resection was performed that included the surrounding gliotic and hemosiderin-stained brain parenchyma. After a mean follow-up period of 5.9 years, all patients were in good condition. Concerning the seizure outcome, as assessed by the Engel classification, 11 (78%) patients were seizure-free (class I) and 3 (22%) patients were in class II [2].

Removal of the surrounding gliotic parenchyma and hemosiderin ring is a matter of debate. Ferroli et al. [3] reported that 68/99 patients that presented with epilepsy were completely seizure free after pure lesionectomy alone. On the contrary, Hammen et al. [4] reported that complete resection of hemosiderin fringe surrounding the cavernoma was correlated to less post-operative seizure frequency. Baumann et al. [5] also found that complete removal of the cavernoma’s surrounding hemosiderin-stained brain tissue improved epileptic outcome. In our study, we removed the surrounding gliotic and hemosiderin-stained brain parenchyma in all patients and observed a favorable result on seizure control. To conclude, symptomatic cavernomas should be treated surgically and total resection is associated with favorable results.