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室管膜下瘤是神经系统少见的生长缓慢的非侵袭性良性肿瘤。50%～60%肿瘤好发于第四脑室,30%～40%为侧脑室,少见部位为第三脑室、导水管区和透明隔,在脊髓的室管膜下瘤好发于颈髓和颈胸段髓内或罕见于髓外。发生于脑实质者罕见。现报道1例脑实质及1例侧脑室室管膜下瘤,探讨诊断及鉴别诊断。
Subependymal tumors are rare non-invasive benign tumors of the nervous system that grow slowly. 50% to 60% of the tumors occur in the fourth ventricle, 30% to 40% of the lateral ventricle, the rare part of the third ventricle, aqueduct and transparent septum in the spinal cord of subependymas occur in the cervical cord and Neck thoracic intramedullary or rare in extramedullary. Rare in the parenchyma of the brain. Is reported in 1 case of parenchymal brain and 1 case of subependymoid ventricle to explore the diagnosis and differential diagnosis.