Pediatric tectal glioma presented with acute hydrocephalus and ventriculomegaly. Two case reports.

Tectal gliomas represent a subset of low-grade tumors that arise in the tectal region at the roof of the brainstem. Symptoms of tectal glioma include those caused by increased intracranial pressure due to obstructive hydrocephalus. Headache, blurred vision, double vision, nausea and vomiting are common symptoms. In the treatment, ETV (endoscopic third ventriculostomy) or VP-shunt (ventriculoperitoneal) can be applied to treat hydrocephalus. Tectal gliomas are usually diagnosed in childhood and often occur in adults. They are often benign, slowly progressing lesions; outpatient clinical and radiological follow- up is sufficient. We present two cases of pediatric patients with mesencephalic tectal plate tumors. An 11-year-old boy and a 15-year-old girl applied to the Emergency Department with different complaints. The 11 year-old-boy was treated with VP-shunt due to acute hydrocephalus.