Colloid cyst of the third ventricle: Experience of total endoscopic excision in 7 cases

Abstract

Background: In the past, microsurgical resection was considered the gold standard treatment for colloid cysts. The endoscopic approach is gaining popularity and has been recognized as a safe and effective alternative to open surgery.

Aims: To evaluate our results, safety and efficacy of the endoscopic approach

Materials and methods: This retrospective study included seven patients with colloid cysts who underwent endoscopic resection between May 2020 and April 2022. Patient records, radiological images, and surgical notes were assessed. Follow-up data, including clinical and radiological details, were retrieved. Postoperative Computed tomography (CT) was performed, and magnetic resonance imaging (MRI) was performed in all patients.

Result: Seven patients aged range 27-56 years 4 males and 3 females underwent endoscopic resection of the tumor during the study period. All patients presented with headaches. The mean diameter of the cyst was 10.6(range 8 -14mm), and the mean operating time was 126(range 100 -180 min). All patients underwent the single burr hole and single port technique. Six patients underwent transforaminal surgery and one patient underwent trans-septal corridor. GTR was achieved in six patients. One patient underwent near-total resection with coagulation of the capsule. None of the endoscopic procedures was converted to open resection. No patient had a recurrence, and the mean follow-up period was 24.3 (range 16 to 36 months). There were no deaths during the follow-up period. No residual cysts were observed on postoperative MRI in any patient.

Conclusion: Endoscopic excision of colloid cysts is an effective and safe alternative method. Although the follow-up time was short, the residual cyst wall remained asymptomatic without any evidence of growth after near excision and coagulation of the wall.