Schul David B, Meier Michael P, Földvari Zsuzsanna, Krammer Matthias J, Lumenta Christianto B
Department of Neurosurgery, Bogenhausen Academic Teaching Hospital, Technical University of Munich, Munich, Germany.
Department of Neurosurgery, Bogenhausen Academic Teaching Hospital, Technical University of Munich, Munich, Germany.
World Neurosurg. 2018 Sep;117:199-202. doi: 10.1016/j.wneu.2018.06.040. Epub 2018 Jun 15.
Meningioma growing into an arachnoid cyst is an extremely rare event. Only 3 cases are reported in the literature. In 2 of them, an operative procedure in or near the arachnoid cyst preceded tumor growth.
We report a case of a patient requiring marsupialization of an arachnoid cyst of the middle cranial fossa. On follow-up, 3 years postoperatively he showed no signs of recurrence or tumor growth. One year later, the fourth year after surgery on the cyst, he presented with large tumor growth into the former cyst's cavity. Pathologic workup after resection revealed an atypical meningioma (World Health Organization grade II).
We discuss the possible pathogenesis in light of the scarce published literature, as well as the differential diagnosis of this rapidly growing tumor.
脑膜瘤长入蛛网膜囊肿是一种极其罕见的情况。文献中仅报道了3例。其中2例在蛛网膜囊肿内或其附近进行手术操作后出现肿瘤生长。
我们报告一例需要对中颅窝蛛网膜囊肿进行袋形缝合术的患者。随访发现，术后3年他没有复发或肿瘤生长的迹象。一年后，即囊肿手术后的第四年，他出现肿瘤大量长入先前囊肿腔内的情况。切除术后的病理检查显示为非典型脑膜瘤（世界卫生组织二级）。
我们根据稀少的已发表文献讨论了可能的发病机制，以及这种快速生长肿瘤的鉴别诊断。
