An extremely rare case of choroid plexus carcinoma in the third ventricle of an infant: case report and review of the literature

Background: Choroid plexus tumors are rare intraventricular tumors. Most of these tumors are benign choroid plexus papillomas. Choroid plexus carcinoma is the most malignant choroid plexus tumor and constitutes a small percentage of these tumors. The most common location of these tumors is the lateral ventricle and fourth ventricle in pediatric and adult patients respectively. Rare locations such as the third ventricle are reported in the literature with 55 reports of choroid plexus papilloma and just 3 cases of carcinoma located in the third ventricle.

Case description: We present an extremely rare case of choroid plexus carcinoma of the third ventricle in a 9 months old boy which was resected successfully through transcortical-transforaminal approach along with a review of literature available around different aspects of these tumors.

Conclusion: Choroid plexus carcinomas even in rare locations such as the third ventricle can be effectively resected through the transcortical-transforaminal approach, although post-operative subdural effusion can be a potential complication.