Anaplastic Oligodendroglioma Mimicking Meningioma: Two Cases Report

寡樹突膠質細胞瘤以腦膜瘤特性表現二病例報告

陳以幸(Yi-Hsing Chen) ； 黃勝堅(Sheng-Jean Huang) ； 林隆偉(Long-Wei Lin) ； 郭律廷(Lu-Ting Kuo)

《北市醫學雜誌》 13卷3期 (2016/09) Pp. 161-167

https://doi.org/10.6200/TCMJ.2016.13.3.16

摘要

寡樹突膠質細胞瘤佔所有腦部腫瘤的4%，好發於50歲左右的中年人。在這裡我們所提出的病例報告為兩例寡樹突膠質細胞瘤的病人，影像學的檢查上有硬腦膜尾的表現，一般認為是腦膜瘤的影像學特徵。第一位四十四歲女性，就診主訴為頭痛，嘴角歪斜，以及漸進性的左側臉部以及肢體無力。核磁共振檢查為右側額葉有個囊狀、基於硬腦膜上長出的腦實質外腫瘤。第二位為五十一歲男性，因為暈厥而被送至急診。核磁共振上看起來為右額葉囊狀性，基於硬腦膜長出的腫瘤。兩位患者皆接受了開顱腫瘤切除手術並順利出院。此兩例病例報告提醒了我們寡樹突星狀細胞瘤可以有不同的影像學表現，並在術前的鑑別診斷上可以有更多不同層次的想法。

關鍵字

腦膜瘤 ； 寡樹突膠質細胞瘤

並列摘要

Oligodendrogliomas represent approximately 4% of all primary brain tumors, with peak incidence being in the fifth decade of life. Dura-based oligodendroglial tumors mimicking meningioma has never been reported before. In this report, we describe 2 cases of anaplastic oligodendrogliomas presenting with features of cystic meningiomas on imaging. The first case was a 44-year-old woman presented with headache, mouth deviation, and progressive weakness on the left side of her face and limbs. Imaging study revealed a dura-attached, cystic tumor that occupied the right frontal region. The second case was a 51-year-old man presented with syncope. MRI depicted a dura-attached mass with adjacent cystic changes in the right frontal region. Both patients underwent surgery for tumor excision and were discharged uneventfully. This report highlights the heterogeneity of oligodendrogliomas and their varying imaging features, and the significance to consider the tumor when making pre-operation differential diagnosis on imaging revealing extra-axial dura-based cystic brain lesions.

並列關鍵字

Meningioma ； Oligodendroglioma