Colloid Cysts of The Third Ventricle: The Surgical Experience of a Single Institution
Third ventricular Colloid cysts are benign cysts, located deeply in the diencephalic region. open microsurgical, endoscopic, stereotactic aspiration techniques are possible for achieving good outcomes with considering the right surgical indication. We report the results of 40 patients operated on during 22 years in a north African institution. our study group was composed of an adult subgroup of 33 patients and a pediatric subgroup of 7 patients. the age ranged from 13 to 56 years. The most encountered symptom was chronic headaches in 30 patients. All the patients received an open microsurgical technique for tumoral resection as an ultimate surgical step. 6 Patients were shunted in our department or elsewhere then referred for surgical removal. “The transcallosal transforaminal approach” was the most used in 30 patients. this was due to its flexibility, anatomical preservation of structures, and reduced postoperative risks. Several extensions through the choroidal fissure and the fornix were applied for specific cases. Total resection was achieved in 32 patients and was subtotal in the rest. Tumoral recurrence was noticed in 5 patients and only three symptomatic and available patients were reoperated and completing than a total resection. At the beginning of our experience, we had two cases with definitive recent memory loss. Microsurgical techniques through open approaches could achieve total resection without significant morbidity when it’s conducted by an experienced surgeon. Maximal attention and preservation of the venous system and the fornices must be present to complete a perfect surgery without neurocognitive complications. The ability of growth and recurrence depending on the consistency of the cyst must be considered as another field for further research.
Keywords: Colloid cyst, transcallosal transforaminal, microsurgical.
Citation: HANDIS C, FELISSI Y, MEZIANI S, MORSLI A. “Colloid Cysts of The Third Ventricle: The Surgical Experience of a Single Institution”. SVOA Neurology 2:4 (2021) Pages 125-139.
