Neuroendoscopic Ventriculocisternostomy with Stent Placement for Trapped Temporal Horn After the Resection of Glioblastoma

BACKGROUND: Endoscopic ventriculostomy is an attractive surgical alternative to ventriculoperitoneal shunt in the treatment of focal hydrocephalus, including trapped temporal horn (TTH). The major concern of this surgical approach is closure of a stoma, the risk of which may be minimized by placement of a stent after ventriculostomy. CASE DESCRIPTION: The authors report a case of a 60-year-old man with glioblastoma in the corpus callosum and the parietal lobe who developed TTH after partial tumor resection. After the failure of a ventriculoperitoneal shunt, endoscopic ventriculocisternostomy was chosen over the revision of the shunt. A stoma was placed at the medial wall of the dilated temporal horn. Endoscopic inspection confirmed communication with the interpeduncular cistern, but the collapsed lateral ventricle after fenestration suggested the risk of stoma closure. Therefore, a ventricular tube was placed through the stoma as a stent to secure its flow. No further surgical intervention was needed, and the patient was able to complete radiochemotherapy without cessation. CONCLUSIONS: The risk of recurrence of TTH after endoscopic ventriculocisternostomy may be minimized by combining ventriculostomy with stent placement. This surgical procedure would be beneficial, particularly in cases of TTH associated with malignant brain tumors, where the risk of delay or interruption of adjuvant oncologic treatments may negatively impact patient prognosis.